{"id":24497,"date":"2021-12-17T17:24:31","date_gmt":"2021-12-17T10:24:31","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=24497"},"modified":"2021-12-17T17:24:33","modified_gmt":"2021-12-17T10:24:33","slug":"phuong-trinh-duong-thang-nang-cao","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/phuong-trinh-duong-thang-nang-cao\/","title":{"rendered":"PH\u01af\u01a0NG TR\u00ccNH \u0110\u01af\u1edcNG TH\u1eb2NG N\u00c2NG CAO"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n<h2><a id=\"post-24497-_Toc493273876\"><\/a><a id=\"post-24497-_Toc492701526\"><\/a><strong>A &#8211; L\u00dd THUY\u1ebeT CHUNG<\/strong><\/h2>\n<p><strong>1. \u0110\u1ecbnh ngh\u0129a<\/strong><\/p>\n<p>Ph\u01b0\u01a1ng tr\u00ecnh tham s\u1ed1 c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng <img decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24498\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_256-45.png\" alt=\"IMG_256\" \/> \u0111i qua \u0111i\u1ec3m <img decoding=\"async\" width=\"119\" height=\"34\" class=\"wp-image-24499\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_257-44.png\" alt=\"IMG_257\" \/> v\u00e0 c\u00f3 vec t\u01a1 ch\u1ec9 ph\u01b0\u01a1ng <img decoding=\"async\" width=\"170\" height=\"35\" class=\"wp-image-24500\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_258-45.png\" alt=\"IMG_258\" \/> : <img loading=\"lazy\" decoding=\"async\" width=\"110\" height=\"94\" class=\"wp-image-24501\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_259-42.png\" alt=\"IMG_259\" \/><\/p>\n<p>N\u1ebfu <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"31\" class=\"wp-image-24502\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_260-44.png\" alt=\"IMG_260\" \/> \u0111\u1ec1u kh\u00e1c kh\u00f4ng. Ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24503\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_261-42.png\" alt=\"IMG_261\" \/> vi\u1ebft d\u01b0\u1edbi d\u1ea1ng ch\u00ednh t\u1eafc nh\u01b0 sau:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"194\" height=\"56\" class=\"wp-image-24504\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_262-43.png\" alt=\"IMG_262\" \/><\/p>\n<p>Ngo\u00e0i ra \u0111\u01b0\u1eddng th\u1eb3ng c\u00f2n c\u00f3 d\u1ea1ng t\u1ed5ng qu\u00e1t l\u00e0: <img loading=\"lazy\" decoding=\"async\" width=\"211\" height=\"64\" class=\"wp-image-24505\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_263-44.png\" alt=\"IMG_263\" \/><\/p>\n<p>v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"170\" height=\"31\" class=\"wp-image-24506\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_264-43.png\" alt=\"IMG_264\" \/> th\u1ecfa <img loading=\"lazy\" decoding=\"async\" width=\"304\" height=\"31\" class=\"wp-image-24507\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_265-43.png\" alt=\"IMG_265\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_265-43.png 304w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_265-43-300x31.png 300w\" sizes=\"(max-width: 304px) 100vw, 304px\" \/><\/p>\n<p><strong>2. V\u1ecb tr\u00ed t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Ch\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Ch\u01b0\u01a1ng tr\u00ecnh n\u00e2ng cao<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p><strong><em>1 )V\u1ecb tr\u00ed t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng<\/em><\/strong><\/p>\n<p>Trong kh\u00f4ng gian <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"27\" class=\"wp-image-24508\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_266-43.png\" alt=\"IMG_266\" \/> \u00a0cho hai \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"311\" height=\"94\" class=\"wp-image-24509\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_267-44.png\" alt=\"IMG_267\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_267-44.png 311w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_267-44-300x91.png 300w\" sizes=\"(max-width: 311px) 100vw, 311px\" \/><\/p>\n<p>Vtcp <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"30\" class=\"wp-image-24510\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_268-44.png\" alt=\"IMG_268\" \/> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"31\" class=\"wp-image-24511\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_269-44.png\" alt=\"IMG_269\" \/> \u00a0v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-24512\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_270-42.png\" alt=\"IMG_270\" \/> \u00a0c\u00f3 vtcp <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"30\" class=\"wp-image-24513\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_271-44.png\" alt=\"IMG_271\" \/> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"31\" class=\"wp-image-24514\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_272-44.png\" alt=\"IMG_272\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"31\" class=\"wp-image-24515\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_273-42.png\" alt=\"IMG_273\" \/> \u00a0<strong><em>c\u00f9ng ph\u01b0\u01a1ng:<\/em><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"342\" height=\"67\" class=\"wp-image-24516\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_274-43.png\" alt=\"IMG_274\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_274-43.png 342w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_274-43-300x59.png 300w\" sizes=\"(max-width: 342px) 100vw, 342px\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"31\" class=\"wp-image-24517\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_275-42.png\" alt=\"IMG_275\" \/> \u00a0<strong><em>kh\u00f4ng c\u00f9ng ph\u01b0\u01a1ng:<\/em><\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"215\" height=\"94\" class=\"wp-image-24518\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_276-43.png\" alt=\"IMG_276\" \/><\/p>\n<p>\u00b7 d ch\u00e9o d\u2019 <img loading=\"lazy\" decoding=\"async\" width=\"30\" height=\"20\" class=\"wp-image-24519\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_277-43.png\" alt=\"IMG_277\" \/> \u00a0h\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"30\" height=\"34\" class=\"wp-image-24520\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_278-44.png\" alt=\"IMG_278\" \/> \u00a0v\u00f4 nghi\u1ec7m<\/p>\n<p>\u00b7 d c\u1eaft d\u2019 <img loading=\"lazy\" decoding=\"async\" width=\"30\" height=\"20\" class=\"wp-image-24521\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_279-42.png\" alt=\"IMG_279\" \/> \u00a0h\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"30\" height=\"34\" class=\"wp-image-24522\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_280-44.png\" alt=\"IMG_280\" \/> \u00a0c\u00f3 1 nghi\u1ec7m<\/p>\n<\/td>\n<td>\n<p><strong><em>1 ) V\u1ecb tr\u00ed t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng<\/em><\/strong><\/p>\n<p>Trong kh\u00f4ng gian <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"27\" class=\"wp-image-24523\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_281-43.png\" alt=\"IMG_281\" \/> \u00a0cho hai \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"311\" height=\"94\" class=\"wp-image-24524\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_282-44.png\" alt=\"IMG_282\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_282-44.png 311w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_282-44-300x91.png 300w\" sizes=\"(max-width: 311px) 100vw, 311px\" \/><\/p>\n<p>Vtcp <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"30\" class=\"wp-image-24525\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_283-43.png\" alt=\"IMG_283\" \/> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"31\" class=\"wp-image-24526\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_284-43.png\" alt=\"IMG_284\" \/> \u00a0v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-24527\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_285-44.png\" alt=\"IMG_285\" \/> \u00a0c\u00f3 vtcp <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"30\" class=\"wp-image-24528\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_286-43.png\" alt=\"IMG_286\" \/> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"31\" class=\"wp-image-24529\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_287-44.png\" alt=\"IMG_287\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"211\" height=\"74\" class=\"wp-image-24530\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_288-44.png\" alt=\"IMG_288\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"210\" height=\"74\" class=\"wp-image-24531\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_289-45.png\" alt=\"IMG_289\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"286\" height=\"87\" class=\"wp-image-24532\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_290-44.png\" alt=\"IMG_290\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"40\" class=\"wp-image-24533\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_291-43.png\" alt=\"IMG_291\" \/> \u00a0<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00a0<\/p>\n<p><strong>3. V\u1ecb tr\u00ed t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><strong>Ph\u01b0\u01a1ng ph\u00e1p 1<\/strong><\/p>\n<\/td>\n<td>\n<p><strong>Ph\u01b0\u01a1ng ph\u00e1p 2<\/strong><\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Trong kh\u00f4ng gian <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"27\" class=\"wp-image-24534\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_292-44.png\" alt=\"IMG_292\" \/> \u00a0cho:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"180\" height=\"34\" class=\"wp-image-24535\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_293-44.png\" alt=\"IMG_293\" \/> \u00a0v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"131\" height=\"94\" class=\"wp-image-24536\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_294-43.png\" alt=\"IMG_294\" \/><\/p>\n<p><strong>Pt<\/strong>: <img loading=\"lazy\" decoding=\"async\" width=\"396\" height=\"34\" class=\"wp-image-24537\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_295-42.png\" alt=\"IMG_295\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_295-42.png 396w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_295-42-300x26.png 300w\" sizes=\"(max-width: 396px) 100vw, 396px\" \/><\/p>\n<p>\u00b7 Ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"30\" height=\"34\" class=\"wp-image-24538\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_296-42.png\" alt=\"IMG_296\" \/> \u00a0v\u00f4 nghi\u1ec7m th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"34\" class=\"wp-image-24539\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_297-42.png\" alt=\"IMG_297\" \/><\/p>\n<p>\u00b7 Ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"30\" height=\"34\" class=\"wp-image-24540\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_298-42.png\" alt=\"IMG_298\" \/> \u00a0c\u00f3 1 nghi\u1ec7m th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24541\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_299-43.png\" alt=\"IMG_299\" \/> \u00a0c\u1eaft <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24542\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_300-43.png\" alt=\"IMG_300\" \/><\/p>\n<p>\u00b7 Ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"30\" height=\"34\" class=\"wp-image-24543\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_301-43.png\" alt=\"IMG_301\" \/> \u00a0c\u00f3 v\u00f4 s\u1ed1 nghi\u1ec7m th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"34\" class=\"wp-image-24544\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_302-43.png\" alt=\"IMG_302\" \/><\/p>\n<p>\u0110\u1eb7c bi\u1ec7t: <img loading=\"lazy\" decoding=\"async\" width=\"130\" height=\"35\" class=\"wp-image-24545\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_303-43.png\" alt=\"IMG_303\" \/> \u00a0c\u00f9ng ph\u01b0\u01a1ng<\/p>\n<\/td>\n<td>\n<p>Trong kh\u00f4ng gian <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"27\" class=\"wp-image-24546\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_304-43.png\" alt=\"IMG_304\" \/> \u00a0cho \u0111\u01b0\u1eddng th\u1eb3ng d qua <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"34\" class=\"wp-image-24547\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_305-43.png\" alt=\"IMG_305\" \/> \u00a0c\u00f3 vtcp: <img loading=\"lazy\" decoding=\"async\" width=\"119\" height=\"35\" class=\"wp-image-24548\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_306-43.png\" alt=\"IMG_306\" \/> \u00a0v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"180\" height=\"34\" class=\"wp-image-24549\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_307-43.png\" alt=\"IMG_307\" \/> \u00a0c\u00f3 vtpt <img loading=\"lazy\" decoding=\"async\" width=\"107\" height=\"35\" class=\"wp-image-24550\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_308-43.png\" alt=\"IMG_308\" \/><\/p>\n<p>\u00b7 <strong><img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"34\" class=\"wp-image-24551\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_309-42.png\" alt=\"IMG_309\" \/><\/strong> \u00a0c\u1eaft <img loading=\"lazy\" decoding=\"async\" width=\"120\" height=\"35\" class=\"wp-image-24552\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_310-43.png\" alt=\"IMG_310\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"194\" height=\"71\" class=\"wp-image-24553\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_311-42.png\" alt=\"IMG_311\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"34\" class=\"wp-image-24554\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_312-42.png\" alt=\"IMG_312\" \/> \u00a0n\u1eb1m tr\u00ean mp <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24555\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_313-41.png\" alt=\"IMG_313\" \/> \u00a0 <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"71\" class=\"wp-image-24556\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_314-41.png\" alt=\"IMG_314\" \/> \u00a0<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>4. Kho\u1ea3ng c\u00e1ch<\/strong><\/p>\n<table>\n<tbody>\n<tr>\n<td colspan=\"2\">\n<p><strong>Kho\u1ea3ng c\u00e1ch t\u1eeb <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"34\" class=\"wp-image-24557\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_315-41.png\" alt=\"IMG_315\" \/><\/strong> \u00a0<strong>\u0111\u1ebfn m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"180\" height=\"34\" class=\"wp-image-24558\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_316-41.png\" alt=\"IMG_316\" \/><\/strong> cho b\u1edfi c\u00f4ng th\u1ee9c <strong><img loading=\"lazy\" decoding=\"async\" width=\"275\" height=\"60\" class=\"wp-image-24559\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_317-41.png\" alt=\"IMG_317\" \/><\/strong> \u00a0<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<p>Kho\u1ea3ng c\u00e1ch t\u1eeb M \u0111\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"34\" class=\"wp-image-24560\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_318-41.png\" alt=\"IMG_318\" \/><\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p 1:<\/p>\n<p>\u00b7 L\u1eadp ptmp <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24561\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_319-41.png\" alt=\"IMG_319\" \/> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"22\" class=\"wp-image-24562\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_320-41.png\" alt=\"IMG_320\" \/> \u00a0v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi d.<\/p>\n<p>\u00b7 T\u00ecm t\u1ecda \u0111\u1ed9 giao \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24563\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_321-40.png\" alt=\"IMG_321\" \/> \u00a0c\u1ee7a mp <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24564\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_322-40.png\" alt=\"IMG_322\" \/> \u00a0v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24565\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_323-38.png\" alt=\"IMG_323\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"131\" height=\"34\" class=\"wp-image-24566\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_324-38.png\" alt=\"IMG_324\" \/><\/p>\n<p>\u00d8 Kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau<\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p 1:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24567\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_325-38.png\" alt=\"IMG_325\" \/> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"34\" class=\"wp-image-24568\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_326-38.png\" alt=\"IMG_326\" \/> ; c\u00f3 vtpt <img loading=\"lazy\" decoding=\"async\" width=\"119\" height=\"35\" class=\"wp-image-24569\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_327-38.png\" alt=\"IMG_327\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-24570\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_328-37.png\" alt=\"IMG_328\" \/> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"134\" height=\"34\" class=\"wp-image-24571\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_329-36.png\" alt=\"IMG_329\" \/> ; vtpt <img loading=\"lazy\" decoding=\"async\" width=\"140\" height=\"35\" class=\"wp-image-24572\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_330-37.png\" alt=\"IMG_330\" \/><\/p>\n<p>L\u1eadp ph\u01b0\u01a1ng tr\u00ecnh mp <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24573\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_331-36.png\" alt=\"IMG_331\" \/> \u00a0ch\u1ee9a d v\u00e0 song song v\u1edbi d\u2019: <img loading=\"lazy\" decoding=\"async\" width=\"186\" height=\"34\" class=\"wp-image-24574\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_332-37.png\" alt=\"IMG_332\" \/> \u00a0<\/p>\n<\/td>\n<td>\n<p>\u00d8 Kho\u1ea3ng c\u00e1ch t\u1eeb M \u0111\u1ebfn \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"34\" class=\"wp-image-24575\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_333-37.png\" alt=\"IMG_333\" \/><\/p>\n<p>Ph\u01b0\u01a1ng ph\u00e1p 2:<\/p>\n<p><strong>(<img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24576\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_334-35.png\" alt=\"IMG_334\" \/><\/strong> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"31\" class=\"wp-image-24577\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_335-36.png\" alt=\"IMG_335\" \/> \u00a0c\u00f3 vtcp <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"30\" class=\"wp-image-24578\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_336-36.png\" alt=\"IMG_336\" \/> \u00a0)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"190\" height=\"80\" class=\"wp-image-24579\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_337-36.png\" alt=\"IMG_337\" \/><\/p>\n<p>\u00d8 Kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau<\/p>\n<p><em>Ph\u01b0\u01a1ng ph\u00e1p 2:<\/em><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24580\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_338-35.png\" alt=\"IMG_338\" \/> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"34\" class=\"wp-image-24581\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_339-35.png\" alt=\"IMG_339\" \/> ; c\u00f3 vtpt <img loading=\"lazy\" decoding=\"async\" width=\"119\" height=\"35\" class=\"wp-image-24582\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_340-35.png\" alt=\"IMG_340\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-24583\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_341-35.png\" alt=\"IMG_341\" \/> \u00a0\u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"134\" height=\"34\" class=\"wp-image-24584\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_342-35.png\" alt=\"IMG_342\" \/> ; vtpt <img loading=\"lazy\" decoding=\"async\" width=\"140\" height=\"35\" class=\"wp-image-24585\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_343-34.png\" alt=\"IMG_343\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"256\" height=\"84\" class=\"wp-image-24586\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_344-34.png\" alt=\"IMG_344\" \/> \u00a0<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>5. G\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng<\/strong><\/p>\n<p>\u00d8 G\u00f3c gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24587\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_345-34.png\" alt=\"IMG_345\" \/> \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"34\" class=\"wp-image-24588\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_346-33.png\" alt=\"IMG_346\" \/> c\u00f3 VTCP <img loading=\"lazy\" decoding=\"async\" width=\"119\" height=\"35\" class=\"wp-image-24589\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_347-32.png\" alt=\"IMG_347\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"34\" class=\"wp-image-24590\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_348-31.png\" alt=\"IMG_348\" \/> \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"134\" height=\"34\" class=\"wp-image-24591\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_349-31.png\" alt=\"IMG_349\" \/> c\u00f3 VTCP <img loading=\"lazy\" decoding=\"async\" width=\"140\" height=\"35\" class=\"wp-image-24592\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_350-31.png\" alt=\"IMG_350\" \/><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"507\" height=\"76\" class=\"wp-image-24593\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_351-31.png\" alt=\"IMG_351\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_351-31.png 507w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_351-31-300x45.png 300w\" sizes=\"(max-width: 507px) 100vw, 507px\" \/><\/p>\n<p><strong>6. G\u00f3c gi\u1eefa \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng<\/strong><\/p>\n<p>G\u00f3c gi\u1eefa \u0111\u01b0\u1eddng th\u1eb3ng v\u00e0 m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24594\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_352-31.png\" alt=\"IMG_352\" \/> \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"31\" class=\"wp-image-24595\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_353-31.png\" alt=\"IMG_353\" \/> c\u00f3 VTCP <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"30\" class=\"wp-image-24596\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_354-31.png\" alt=\"IMG_354\" \/> , m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24597\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_355-31.png\" alt=\"IMG_355\" \/> c\u00f3 VTPT <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"35\" class=\"wp-image-24598\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_356-30.png\" alt=\"IMG_356\" \/><\/p>\n<p>G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24599\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_357-31.png\" alt=\"IMG_357\" \/> l\u00e0 g\u00f3c h\u1ee3p b\u1edfi <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24600\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_358-31.png\" alt=\"IMG_358\" \/> v\u00e0 m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"450\" height=\"66\" class=\"wp-image-24601\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_359-29.png\" alt=\"IMG_359\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_359-29.png 450w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_359-29-300x44.png 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/p>\n<h2><strong>B &#8211; C\u00c1C D\u1ea0NG TO\u00c1N V\u1ec0 PH\u01af\u01a0NG TR\u00ccNH \u0110\u01af\u1edcNG TH\u1eb2NG<\/strong><\/h2>\n<p><em>\u0110\u1ec3 l\u1eadp ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <\/em> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24602\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_360-28.png\" alt=\"IMG_360\" \/><em> ta c\u1ea7n x\u00e1c \u0111\u1ecbnh <\/em><strong><em>m\u1ed9t \u0111i\u1ec3m thu\u1ed9c <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24603\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_361-27.png\" alt=\"IMG_361\" \/><strong><em> v\u00e0 m\u1ed9t VTCP<\/em><\/strong><em> c\u1ee7a n\u00f3.<\/em><\/p>\n<p><strong><em>D\u1ea1ng 1. Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24604\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_362-27.png\" alt=\"IMG_362\" \/><strong><em> \u0111i qua <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"126\" height=\"36\" class=\"wp-image-24605\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_363-24.png\" alt=\"IMG_363\" \/><strong><em> v\u00e0 c\u00f3 vtcp<\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"116\" height=\"39\" class=\"wp-image-24606\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_364-26.png\" alt=\"IMG_364\" \/><strong>:<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"233\" height=\"66\" class=\"wp-image-24607\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_365-26.png\" alt=\"IMG_365\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"242\" height=\"92\" class=\"wp-image-24608\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_366-26.png\" alt=\"IMG_366\" \/><\/p>\n<p><strong> <em>ho\u1eb7c<\/em><\/strong><\/p>\n<p>\u00a0<\/p>\n<p><strong><em>D\u1ea1ng 2. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24609\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_367-26.png\" alt=\"IMG_367\" \/><strong><em> \u0111i qua <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24610\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_368-25.png\" alt=\"IMG_368\" \/><strong><em> v\u00e0 <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24611\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_369-25.png\" alt=\"IMG_369\" \/> :<\/p>\n<p>\u00b7 \u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24612\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_370-25.png\" alt=\"IMG_370\" \/> \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24613\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_371-25.png\" alt=\"IMG_371\" \/> (ho\u1eb7c <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24614\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_372-25.png\" alt=\"IMG_372\" \/> ) c\u00f3 vtcp <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"35\" class=\"wp-image-24615\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_373-24.png\" alt=\"IMG_373\" \/><\/p>\n<p>\u00b7 S\u1eed d\u1ee5ng d\u1ea1ng 1 \u0111\u1ec3 vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24616\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_374-23.png\" alt=\"IMG_374\" \/> .<\/p>\n<p><strong><em>D\u1ea1ng 3. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24617\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_375-23.png\" alt=\"IMG_375\" \/><strong><em>qua <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24618\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_376-22.png\" alt=\"IMG_376\" \/><strong><em> v\u00e0 song song <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24619\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_377-21.png\" alt=\"IMG_377\" \/><\/p>\n<p>\u00b7 \u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24620\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_378-20.png\" alt=\"IMG_378\" \/> \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24621\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_379-20.png\" alt=\"IMG_379\" \/> v\u00e0 c\u00f3 vtcp <img loading=\"lazy\" decoding=\"async\" width=\"66\" height=\"35\" class=\"wp-image-24622\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_380-20.png\" alt=\"IMG_380\" \/><\/p>\n<p>\u00b7 S\u1eed d\u1ee5ng d\u1ea1ng 1 \u0111\u1ec3 vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24623\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_381-20.png\" alt=\"IMG_381\" \/> .<\/p>\n<p><strong><em>D\u1ea1ng 4. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24624\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_382-20.png\" alt=\"IMG_382\" \/><strong><em> qua <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24625\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_383-20.png\" alt=\"IMG_383\" \/><strong><em> v\u00e0 vu\u00f4ng g\u00f3c mp<\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24626\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_384-20.png\" alt=\"IMG_384\" \/><\/p>\n<p>\u00b7 \u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24627\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_385-19.png\" alt=\"IMG_385\" \/> \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24628\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_386-19.png\" alt=\"IMG_386\" \/> v\u00e0 c\u00f3 vtcp <img loading=\"lazy\" decoding=\"async\" width=\"66\" height=\"35\" class=\"wp-image-24629\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_387-17.png\" alt=\"IMG_387\" \/><\/p>\n<p>\u00b7 S\u1eed d\u1ee5ng d\u1ea1ng 1 \u0111\u1ec3 vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24630\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_388-15.png\" alt=\"IMG_388\" \/> .<\/p>\n<p><strong><em>D\u1ea1ng 5. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24631\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_389-13.png\" alt=\"IMG_389\" \/><strong><em> qua <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24632\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_390-14.png\" alt=\"IMG_390\" \/><strong><em> v\u00e0 vu\u00f4ng g\u00f3c 2 \u0111\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24633\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_391-13.png\" alt=\"IMG_391\" \/><strong><em> v\u00e0 <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24634\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_392-14.png\" alt=\"IMG_392\" \/><strong><em>:<\/em><\/strong><\/p>\n<p>\u00b7 \u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24635\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_393-14.png\" alt=\"IMG_393\" \/> \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24636\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_394-14.png\" alt=\"IMG_394\" \/> v\u00e0 c\u00f3 vtcp <img loading=\"lazy\" decoding=\"async\" width=\"108\" height=\"43\" class=\"wp-image-24637\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_395-13.png\" alt=\"IMG_395\" \/><\/p>\n<p>\u00b7 S\u1eed d\u1ee5ng d\u1ea1ng 1 \u0111\u1ec3 vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24638\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_396-13.png\" alt=\"IMG_396\" \/> .<\/p>\n<p><strong><em>D\u1ea1ng 6. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24639\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_397-13.png\" alt=\"IMG_397\" \/><strong><em> l\u00e0 giao tuy\u1ebfn c\u1ee7a hai m\u1eb7t ph\u1eb3ng<\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"36\" class=\"wp-image-24640\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_398-14.png\" alt=\"IMG_398\" \/><strong><em>:<\/em><\/strong><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 1<\/em><\/strong><em>: <\/em>T\u00ecm m\u1ed9t \u0111i\u1ec3m v\u00e0 m\u1ed9t vtcp.<\/p>\n<p>\u2013 T\u00ecm to\u1ea1 \u0111\u1ed9 m\u1ed9t \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24641\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_399-14.png\" alt=\"IMG_399\" \/> \u00ce <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24642\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_400-14.png\" alt=\"IMG_400\" \/> : B\u1eb1ng c\u00e1ch gi\u1ea3i h\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"44\" height=\"56\" class=\"wp-image-24643\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_401-14.png\" alt=\"IMG_401\" \/><\/p>\n<p><em> (v\u1edbi vi\u1ec7c ch\u1ecdn gi\u00e1 tr\u1ecb cho m\u1ed9t \u1ea9n ta s\u1ebd gi\u1ea3i h\u1ec7 t\u00ecm gi\u00e1 tr\u1ecb hai \u1ea9n c\u00f2n l\u1ea1i)<\/em><\/p>\n<p>\u2013 T\u00ecm m\u1ed9t vtcp c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24644\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_402-14.png\" alt=\"IMG_402\" \/> : <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"43\" class=\"wp-image-24645\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_403-14.png\" alt=\"IMG_403\" \/><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 2<\/em><\/strong><em>: <\/em>T\u00ecm hai \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"42\" height=\"26\" class=\"wp-image-24646\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_404-14.png\" alt=\"IMG_404\" \/> thu\u1ed9c <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24647\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_405-14.png\" alt=\"IMG_405\" \/> , r\u1ed3i vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua hai \u0111i\u1ec3m \u0111\u00f3.<\/p>\n<p><strong><em>D\u1ea1ng 7. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24648\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_406-14.png\" alt=\"IMG_406\" \/><strong><em>\u0111i qua \u0111i\u1ec3m <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"126\" height=\"36\" class=\"wp-image-24649\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_407-14.png\" alt=\"IMG_407\" \/><strong><em> v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi hai \u0111\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"31\" class=\"wp-image-24650\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_408-14.png\" alt=\"IMG_408\" \/><strong><em>:<\/em><\/strong><\/p>\n<p>\u00b7 V\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24651\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_409-14.png\" alt=\"IMG_409\" \/> ^ <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24652\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_410-14.png\" alt=\"IMG_410\" \/> , <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24653\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_411-14.png\" alt=\"IMG_411\" \/> ^ <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24654\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_412-14.png\" alt=\"IMG_412\" \/> n\u00ean m\u1ed9t vtcp c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24655\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_413-14.png\" alt=\"IMG_413\" \/> l\u00e0: <img loading=\"lazy\" decoding=\"async\" width=\"116\" height=\"43\" class=\"wp-image-24656\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_414-14.png\" alt=\"IMG_414\" \/><\/p>\n<p>\u00b7 S\u1eed d\u1ee5ng d\u1ea1ng 1 \u0111\u1ec3 vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24657\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_415-14.png\" alt=\"IMG_415\" \/> .<\/p>\n<p><strong><em>D\u1ea1ng 8. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24658\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_416-14.png\" alt=\"IMG_416\" \/> <strong><em>\u0111i qua \u0111i\u1ec3m <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"126\" height=\"36\" class=\"wp-image-24659\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_417-14.png\" alt=\"IMG_417\" \/><strong><em>, vu\u00f4ng g\u00f3c v\u00e0 c\u1eaft \u0111\u01b0\u1eddng th\u1eb3ng<\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24660\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_418-14.png\" alt=\"IMG_418\" \/><strong><em> .<\/em><\/strong><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 1<\/em><\/strong><em>: <\/em>G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24661\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_419-13.png\" alt=\"IMG_419\" \/> l\u00e0 h\u00ecnh chi\u1ebfu vu\u00f4ng g\u00f3c c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"31\" class=\"wp-image-24662\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_420-13.png\" alt=\"IMG_420\" \/> tr\u00ean \u0111\u01b0\u1eddng th\u1eb3ng D<\/p>\n<p>Ta c\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"100\" height=\"63\" class=\"wp-image-24663\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_421-13.png\" alt=\"IMG_421\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"24\" class=\"wp-image-24664\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_422-13.png\" alt=\"IMG_422\" \/><\/p>\n<p>Khi \u0111\u00f3 \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24665\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_423-13.png\" alt=\"IMG_423\" \/> l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"31\" class=\"wp-image-24666\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_424-13.png\" alt=\"IMG_424\" \/> (tr\u1edf v\u1ec1 d\u1ea1ng 2).<\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 2<\/em><\/strong><em>: <\/em>G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24667\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_425-13.png\" alt=\"IMG_425\" \/> l\u00e0 m\u1eb7t ph\u1eb3ng \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"31\" class=\"wp-image-24668\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_426-13.png\" alt=\"IMG_426\" \/> v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24669\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_427-13.png\" alt=\"IMG_427\" \/> ; <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"36\" class=\"wp-image-24670\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_428-13.png\" alt=\"IMG_428\" \/> l\u00e0 m\u1eb7t ph\u1eb3ng \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"31\" class=\"wp-image-24671\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_429-13.png\" alt=\"IMG_429\" \/> v\u00e0 ch\u1ee9a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24672\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_430-12.png\" alt=\"IMG_430\" \/> . Khi \u0111\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"66\" height=\"36\" class=\"wp-image-24673\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_431-11.png\" alt=\"IMG_431\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"52\" height=\"36\" class=\"wp-image-24674\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_432-11.png\" alt=\"IMG_432\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_432-11.png 52w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_432-11-50x36.png 50w\" sizes=\"(max-width: 52px) 100vw, 52px\" \/> <em>(tr\u1edf v\u1ec1 d\u1ea1ng 6).<\/em><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 3<\/em><\/strong><em>: <\/em>G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24675\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_433-11.png\" alt=\"IMG_433\" \/> l\u00e0 m\u1eb7t ph\u1eb3ng \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"31\" class=\"wp-image-24676\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_434-11.png\" alt=\"IMG_434\" \/> v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24677\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_435-11.png\" alt=\"IMG_435\" \/><\/p>\n<p>&#8211; T\u00ecm \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"102\" height=\"36\" class=\"wp-image-24678\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_436-11.png\" alt=\"IMG_436\" \/><\/p>\n<p>&#8211; Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24679\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_437-12.png\" alt=\"IMG_437\" \/> \u0111i qua hai \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"55\" height=\"31\" class=\"wp-image-24680\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_438-12.png\" alt=\"IMG_438\" \/> <em>(quay v\u1ec1 d\u1ea1ng 2).<\/em><\/p>\n<p><strong><em>D\u1ea1ng 9. \u0110\u01b0\u1eddng th\u1eb3ng<\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24681\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_439-12.png\" alt=\"IMG_439\" \/> <strong><em>n\u1eb1m trong m\u1eb7t ph\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24682\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_440-12.png\" alt=\"IMG_440\" \/> , <strong><em>vu\u00f4ng g\u00f3c v\u00e0 c\u1eaft \u0111\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24683\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_441-12.png\" alt=\"IMG_441\" \/><\/p>\n<p>\u00b7 T\u00ecm giao \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24684\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_442-12.png\" alt=\"IMG_442\" \/> c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24685\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_443-10.png\" alt=\"IMG_443\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24686\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_444-10.png\" alt=\"IMG_444\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"80\" height=\"24\" class=\"wp-image-24687\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_445-10.png\" alt=\"IMG_445\" \/><\/p>\n<p>\u00b7 V\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"226\" height=\"74\" class=\"wp-image-24688\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_446-9.png\" alt=\"IMG_446\" \/><\/p>\n<p><strong><em>D\u1ea1ng 10. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24689\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_447-9.png\" alt=\"IMG_447\" \/><strong><em> qua <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24690\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_448-9.png\" alt=\"IMG_448\" \/><strong><em> v\u00e0 c\u1eaft <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"31\" class=\"wp-image-24691\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_449-7.png\" alt=\"IMG_449\" \/><strong><em>: <\/em><\/strong><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"27\" class=\"wp-image-24692\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_450-7.png\" alt=\"IMG_450\" \/> v\u1edbi mp <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24693\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_451-7.png\" alt=\"IMG_451\" \/> ch\u1ee9a <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24694\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_452-7.png\" alt=\"IMG_452\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24695\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_453-7.png\" alt=\"IMG_453\" \/> ; mp <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24696\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_454-7.png\" alt=\"IMG_454\" \/> ch\u1ee9a <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24697\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_455-6.png\" alt=\"IMG_455\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24698\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_456-6.png\" alt=\"IMG_456\" \/> <em>(tr\u1edf v\u1ec1 d\u1ea1ng 6)<\/em><\/p>\n<p><strong><em>D\u1ea1ng 11. \u0110\u01b0\u1eddng th\u1eb3ng<\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24699\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_457-6.png\" alt=\"IMG_457\" \/> <strong><em>n\u1eb1m trong m\u1eb7t ph\u1eb3ng<\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24700\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_458-6.png\" alt=\"IMG_458\" \/><strong><em> v\u00e0 c\u1eaft c\u1ea3 hai \u0111\u01b0\u1eddng th\u1eb3ng<\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"31\" class=\"wp-image-24701\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_459-6.png\" alt=\"IMG_459\" \/><strong><em>:<\/em><\/strong><\/p>\n<p>\u00b7 T\u00ecm c\u00e1c giao \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"224\" height=\"36\" class=\"wp-image-24702\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_460-6.png\" alt=\"IMG_460\" \/> Khi \u0111\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24703\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_461-6.png\" alt=\"IMG_461\" \/> ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"22\" class=\"wp-image-24704\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_462-5.png\" alt=\"IMG_462\" \/> <em>(v\u1ec1 d\u1ea1ng 2)<\/em>.<\/p>\n<p><strong><em>D\u1ea1ng 12. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"36\" class=\"wp-image-24705\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_463-5.png\" alt=\"IMG_463\" \/><strong><em> v\u00e0 c\u1eaft <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"31\" class=\"wp-image-24706\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_464-5.png\" alt=\"IMG_464\" \/><strong><em>:<\/em><\/strong><\/p>\n<p>\u00b7 Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24707\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_465-5.png\" alt=\"IMG_465\" \/> ch\u1ee9a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24708\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_466-5.png\" alt=\"IMG_466\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24709\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_467-5.png\" alt=\"IMG_467\" \/> , m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"36\" class=\"wp-image-24710\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_468-5.png\" alt=\"IMG_468\" \/> ch\u1ee9a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24711\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_469-5.png\" alt=\"IMG_469\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24712\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_470-4.png\" alt=\"IMG_470\" \/><\/p>\n<p>Khi \u0111\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"66\" height=\"36\" class=\"wp-image-24713\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_471-4.png\" alt=\"IMG_471\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"52\" height=\"36\" class=\"wp-image-24714\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_472-4.png\" alt=\"IMG_472\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_472-4.png 52w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_472-4-50x36.png 50w\" sizes=\"(max-width: 52px) 100vw, 52px\" \/> <em>(tr\u1edf v\u1ec1 d\u1ea1ng 6).<\/em><\/p>\n<p><strong><em>D\u1ea1ng 13. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24715\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_473-4.png\" alt=\"IMG_473\" \/><strong><em>qua <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24716\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_474-4.png\" alt=\"IMG_474\" \/><strong><em> v\u00e0 <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"20\" height=\"22\" class=\"wp-image-24717\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_475-4.png\" alt=\"IMG_475\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24718\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_476-4.png\" alt=\"IMG_476\" \/><strong><em> , c\u1eaft <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24719\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_477-4.png\" alt=\"IMG_477\" \/><strong><em> : <\/em><\/strong><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 1:<\/em><\/strong><\/p>\n<p>&#8211; Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh mp <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24720\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_478-4.png\" alt=\"IMG_478\" \/> qua <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24721\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_479-4.png\" alt=\"IMG_479\" \/> v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24722\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_480-4.png\" alt=\"IMG_480\" \/><\/p>\n<p>&#8211; T\u00ecm <img loading=\"lazy\" decoding=\"async\" width=\"106\" height=\"31\" class=\"wp-image-24723\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_481-4.png\" alt=\"IMG_481\" \/><\/p>\n<p>&#8211; Khi \u0111\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24724\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_482-4.png\" alt=\"IMG_482\" \/> ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng AB <em>(v\u1ec1 d\u1ea1ng 2).<\/em><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 2:<\/em><\/strong><\/p>\n<p>&#8211; Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24725\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_483-4.png\" alt=\"IMG_483\" \/> qua <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24726\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_484-4.png\" alt=\"IMG_484\" \/> v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24727\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_485-4.png\" alt=\"IMG_485\" \/><\/p>\n<p>&#8211; Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"36\" class=\"wp-image-24728\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_486-4.png\" alt=\"IMG_486\" \/> ch\u1ee9a <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24729\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_487-4.png\" alt=\"IMG_487\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24730\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_488-4.png\" alt=\"IMG_488\" \/><\/p>\n<p>&#8211; Khi \u0111\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"66\" height=\"36\" class=\"wp-image-24731\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_489-4.png\" alt=\"IMG_489\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"52\" height=\"36\" class=\"wp-image-24732\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_490-4.png\" alt=\"IMG_490\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_490-4.png 52w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_490-4-50x36.png 50w\" sizes=\"(max-width: 52px) 100vw, 52px\" \/> . <em>(tr\u1edf v\u1ec1 d\u1ea1ng 6)<\/em><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 3:<\/em><\/strong><\/p>\n<p>&#8211; Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh tham s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"14\" height=\"22\" class=\"wp-image-24733\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_491-3.png\" alt=\"IMG_491\" \/> c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24734\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_492-3.png\" alt=\"IMG_492\" \/> (n\u1ebfu ch\u01b0a c\u00f3).<\/p>\n<p>&#8211; T\u00ecm \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"87\" height=\"31\" class=\"wp-image-24735\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_493-3.png\" alt=\"IMG_493\" \/> ( <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24736\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_494-3.png\" alt=\"IMG_494\" \/> c\u00f3 t\u1ecda \u0111\u1ed9 theo tham s\u1ed1 <img loading=\"lazy\" decoding=\"async\" width=\"14\" height=\"22\" class=\"wp-image-24737\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_495-3.png\" alt=\"IMG_495\" \/> ) th\u1ecfa m\u00e3n <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"39\" class=\"wp-image-24738\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_496-3.png\" alt=\"IMG_496\" \/><\/p>\n<p>Gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh t\u00ecm \u0111\u01b0\u1ee3c <img loading=\"lazy\" decoding=\"async\" width=\"52\" height=\"24\" class=\"wp-image-24739\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_497-3.png\" alt=\"IMG_497\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_497-3.png 52w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_497-3-50x24.png 50w\" sizes=\"(max-width: 52px) 100vw, 52px\" \/><\/p>\n<p>&#8211; Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24740\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_498-3.png\" alt=\"IMG_498\" \/> \u0111i qua hai \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"42\" height=\"26\" class=\"wp-image-24741\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_499-3.png\" alt=\"IMG_499\" \/> .<\/p>\n<p><strong><em>D\u1ea1ng 14. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"82\" height=\"36\" class=\"wp-image-24742\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_500-3.png\" alt=\"IMG_500\" \/><strong><em> c\u1eaft <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"31\" class=\"wp-image-24743\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_501-3.png\" alt=\"IMG_501\" \/><strong><em> : <\/em><\/strong><\/p>\n<p>\u00b7 T\u00ecm mp <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24744\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_502-3.png\" alt=\"IMG_502\" \/> ch\u1ee9a <img loading=\"lazy\" decoding=\"async\" width=\"151\" height=\"36\" class=\"wp-image-24745\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_503-3.png\" alt=\"IMG_503\" \/> ch\u1ee9a <img loading=\"lazy\" decoding=\"async\" width=\"78\" height=\"36\" class=\"wp-image-24746\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_504-3.png\" alt=\"IMG_504\" \/><\/p>\n<p>\u00b7 <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"27\" class=\"wp-image-24747\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_505-3.png\" alt=\"IMG_505\" \/> <em>(tr\u1edf v\u1ec1 d\u1ea1ng 6).<\/em><\/p>\n<p><strong><em>D\u1ea1ng 15. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"24\" class=\"wp-image-24748\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_506-3.png\" alt=\"IMG_506\" \/><strong><em>l\u00e0 h\u00ecnh chi\u1ebfu c\u1ee7a <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24749\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_507-3.png\" alt=\"IMG_507\" \/><strong><em> l\u00ean <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24750\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_508-3.png\" alt=\"IMG_508\" \/><strong><em>:<\/em><\/strong><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 1:<\/em><\/strong><\/p>\n<p>&#8211; Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24751\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_509-3.png\" alt=\"IMG_509\" \/> ch\u1ee9a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24752\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_510-3.png\" alt=\"IMG_510\" \/> v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24753\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_511-2.png\" alt=\"IMG_511\" \/> .<\/p>\n<p>&#8211; \u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"24\" class=\"wp-image-24754\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_512-2.png\" alt=\"IMG_512\" \/> l\u00e0 giao tuy\u1ebfn c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24755\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_513-2.png\" alt=\"IMG_513\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24756\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_514-2.png\" alt=\"IMG_514\" \/> <em>(tr\u1edf v\u1ec1 d\u1ea1ng 6).<\/em><\/p>\n<p>\u00b7 <strong><em> C\u00e1ch 2:<\/em><\/strong><\/p>\n<p>&#8211; X\u00e1c \u0111\u1ecbnh <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24757\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_515-2.png\" alt=\"IMG_515\" \/> l\u00e0 giao \u0111i\u1ec3m c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24758\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_516-2.png\" alt=\"IMG_516\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24759\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_517-2.png\" alt=\"IMG_517\" \/> .<\/p>\n<p>&#8211; L\u1ea5y \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"64\" height=\"24\" class=\"wp-image-24760\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_518-2.png\" alt=\"IMG_518\" \/> tr\u00ean <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24761\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_519-2.png\" alt=\"IMG_519\" \/> . Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24762\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_520-2.png\" alt=\"IMG_520\" \/> \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24763\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_521-2.png\" alt=\"IMG_521\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24764\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_522-2.png\" alt=\"IMG_522\" \/> .<\/p>\n<p>&#8211; T\u00ecm t\u1ecda \u0111\u1ed9 \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24765\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_523-2.png\" alt=\"IMG_523\" \/> l\u00e0 giao \u0111i\u1ec3m c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"20\" height=\"23\" class=\"wp-image-24766\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_524-2.png\" alt=\"IMG_524\" \/> v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24767\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_525-2.png\" alt=\"IMG_525\" \/> .<\/p>\n<p>&#8211; \u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"26\" class=\"wp-image-24768\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_526-2.png\" alt=\"IMG_526\" \/> ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"22\" class=\"wp-image-24769\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_527-2.png\" alt=\"IMG_527\" \/> <em>(tr\u1edf v\u1ec1 d\u1ea1ng 2).<\/em><\/p>\n<p><strong><em>\u0110\u1eb7c bi\u1ec7t:<\/em><\/strong> N\u1ebfu <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24770\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_528-2.png\" alt=\"IMG_528\" \/> song song <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24771\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_529-2.png\" alt=\"IMG_529\" \/> th\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"24\" class=\"wp-image-24772\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_530-2.png\" alt=\"IMG_530\" \/> l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24773\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_531-2.png\" alt=\"IMG_531\" \/> v\u00e0 song song v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24774\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_532-2.png\" alt=\"IMG_532\" \/> .<\/p>\n<p><strong><em>D\u1ea1ng 16. Ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng vu\u00f4ng g\u00f3c chung c\u1ee7a hai \u0111\u01b0\u1eddng th\u1eb3ng ch\u00e9o nhau <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"36\" class=\"wp-image-24775\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_533-2.png\" alt=\"IMG_533\" \/><strong><em> v\u00e0 <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"36\" class=\"wp-image-24776\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_534-2.png\" alt=\"IMG_534\" \/> :<\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 1:<\/em><\/strong><\/p>\n<p>&#8211; Chuy\u1ec3n ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"82\" height=\"36\" class=\"wp-image-24777\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_535-2.png\" alt=\"IMG_535\" \/> v\u1ec1 d\u1ea1ng tham s\u1ed1 v\u00e0 x\u00e1c \u0111\u1ecbnh <img loading=\"lazy\" decoding=\"async\" width=\"51\" height=\"35\" class=\"wp-image-24778\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_536-2.png\" alt=\"IMG_536\" \/> l\u1ea7n l\u01b0\u1ee3t l\u00e0 vtcp c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"82\" height=\"36\" class=\"wp-image-24779\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_537-2.png\" alt=\"IMG_537\" \/> .<\/p>\n<p>&#8211; L\u1ea5y <img loading=\"lazy\" decoding=\"async\" width=\"42\" height=\"26\" class=\"wp-image-24780\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_538-2.png\" alt=\"IMG_538\" \/> l\u1ea7n l\u01b0\u1ee3t thu\u1ed9c <img loading=\"lazy\" decoding=\"async\" width=\"82\" height=\"36\" class=\"wp-image-24781\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_539-2.png\" alt=\"IMG_539\" \/> (t\u1ecda \u0111\u1ed9 <img loading=\"lazy\" decoding=\"async\" width=\"42\" height=\"26\" class=\"wp-image-24782\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_540-2.png\" alt=\"IMG_540\" \/> ph\u1ee5 thu\u1ed9c v\u00e0o tham s\u1ed1).<\/p>\n<p>&#8211; Gi\u1ea3 s\u1eed <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"22\" class=\"wp-image-24783\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_541-2.png\" alt=\"IMG_541\" \/> l\u00e0 \u0111\u01b0\u1eddng vu\u00f4ng g\u00f3c chung. Khi \u0111\u00f3: <img loading=\"lazy\" decoding=\"async\" width=\"140\" height=\"74\" class=\"wp-image-24784\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_542-2.png\" alt=\"IMG_542\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"151\" height=\"74\" class=\"wp-image-24785\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_543-2.png\" alt=\"IMG_543\" \/><\/p>\n<p>Gi\u1ea3i h\u1ec7 ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24786\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_544-2.png\" alt=\"IMG_544\" \/> t\u00ecm ra gi\u00e1 tr\u1ecb c\u1ee7a tham s\u1ed1. T\u1eeb \u0111\u00f3 t\u00ecm \u0111\u01b0\u1ee3c <img loading=\"lazy\" decoding=\"async\" width=\"42\" height=\"26\" class=\"wp-image-24787\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_545-2.png\" alt=\"IMG_545\" \/> .<\/p>\n<p>&#8211; Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng vu\u00f4ng g\u00f3c chung <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"22\" class=\"wp-image-24788\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_546-2.png\" alt=\"IMG_546\" \/> .<\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 2:<\/em><\/strong><\/p>\n<p>&#8211; V\u00ec d ^ d<sub>1<\/sub> v\u00e0 d ^ d<sub>2<\/sub> n\u00ean m\u1ed9t vtcp c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24789\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_547-2.png\" alt=\"IMG_547\" \/> l\u00e0: <img loading=\"lazy\" decoding=\"async\" width=\"112\" height=\"43\" class=\"wp-image-24790\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_548-2.png\" alt=\"IMG_548\" \/><\/p>\n<p>&#8211; L\u1eadp ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24791\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_549-2.png\" alt=\"IMG_549\" \/> ch\u1ee9a 2 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24792\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_550-2.png\" alt=\"IMG_550\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24793\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_551-2.png\" alt=\"IMG_551\" \/> , b\u1eb1ng c\u00e1ch:<\/p>\n<p>+ L\u1ea5y m\u1ed9t \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24794\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_552-2.png\" alt=\"IMG_552\" \/> tr\u00ean <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24795\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_553-2.png\" alt=\"IMG_553\" \/> .<\/p>\n<p>+ M\u1ed9t vtpt c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24796\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_554-2.png\" alt=\"IMG_554\" \/> l\u00e0: <img loading=\"lazy\" decoding=\"async\" width=\"103\" height=\"43\" class=\"wp-image-24797\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_555-2.png\" alt=\"IMG_555\" \/><\/p>\n<p>&#8211; T\u01b0\u01a1ng t\u1ef1 l\u1eadp ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"36\" class=\"wp-image-24798\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_556-2.png\" alt=\"IMG_556\" \/> ch\u1ee9a 2 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24799\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_557-2.png\" alt=\"IMG_557\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24800\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_558-2.png\" alt=\"IMG_558\" \/> .<\/p>\n<p>Khi \u0111\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"66\" height=\"36\" class=\"wp-image-24801\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_559-2.png\" alt=\"IMG_559\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"52\" height=\"36\" class=\"wp-image-24802\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_560-2.png\" alt=\"IMG_560\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_560-2.png 52w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_560-2-50x36.png 50w\" sizes=\"(max-width: 52px) 100vw, 52px\" \/> <em>(tr\u1edf v\u1ec1 d\u1ea1ng 6).<\/em><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 3:<\/em><\/strong><\/p>\n<p>&#8211; V\u00ec <img loading=\"lazy\" decoding=\"async\" width=\"52\" height=\"31\" class=\"wp-image-24803\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_561-2.png\" alt=\"IMG_561\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_561-2.png 52w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_561-2-50x31.png 50w\" sizes=\"(max-width: 52px) 100vw, 52px\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"55\" height=\"31\" class=\"wp-image-24804\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_562-2.png\" alt=\"IMG_562\" \/> n\u00ean m\u1ed9t vtcp c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24805\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_563-2.png\" alt=\"IMG_563\" \/> l\u00e0: <img loading=\"lazy\" decoding=\"async\" width=\"112\" height=\"43\" class=\"wp-image-24806\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_564-2.png\" alt=\"IMG_564\" \/><\/p>\n<p>&#8211; L\u1eadp ph\u01b0\u01a1ng tr\u00ecnh m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24807\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_565-2.png\" alt=\"IMG_565\" \/> ch\u1ee9a 2 \u0111\u01b0\u1eddng th\u1eb3ng c\u1eaft nhau <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24808\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_566-2.png\" alt=\"IMG_566\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24809\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_567-2.png\" alt=\"IMG_567\" \/> , b\u1eb1ng c\u00e1ch:<\/p>\n<p>+ L\u1ea5y m\u1ed9t \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24810\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_568-2.png\" alt=\"IMG_568\" \/> tr\u00ean <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"31\" class=\"wp-image-24811\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_569-2.png\" alt=\"IMG_569\" \/> .<\/p>\n<p>+ M\u1ed9t vtpt c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24812\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_570-2.png\" alt=\"IMG_570\" \/> l\u00e0: <img loading=\"lazy\" decoding=\"async\" width=\"103\" height=\"43\" class=\"wp-image-24813\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_571-2.png\" alt=\"IMG_571\" \/><\/p>\n<p>&#8211; T\u00ecm <img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"31\" class=\"wp-image-24814\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_572-2.png\" alt=\"IMG_572\" \/> . Khi \u0111\u00f3 vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24815\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_573-2.png\" alt=\"IMG_573\" \/> qua <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24816\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_574-2.png\" alt=\"IMG_574\" \/> c\u00f3 vtcp <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"35\" class=\"wp-image-24817\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_575-2.png\" alt=\"IMG_575\" \/> .<\/p>\n<p><strong>C\u00c1C D\u1ea0NG TO\u00c1N KH\u00c1C<\/strong><\/p>\n<p><strong><em>D\u1ea1ng 1. <\/em><\/strong>T\u00ecm <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24818\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_576-2.png\" alt=\"IMG_576\" \/><strong><em> l\u00e0 h\u00ecnh chi\u1ebfu c\u1ee7a <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24819\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_577-2.png\" alt=\"IMG_577\" \/><strong><em> tr\u00ean \u0111\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24820\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_578-2.png\" alt=\"IMG_578\" \/><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 1:<\/em><\/strong><\/p>\n<p>&#8211; Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh mp <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24821\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_579-2.png\" alt=\"IMG_579\" \/> qua <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24822\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_580-2.png\" alt=\"IMG_580\" \/> v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24823\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_581-2.png\" alt=\"IMG_581\" \/> : ta c\u00f3 <img loading=\"lazy\" decoding=\"async\" width=\"66\" height=\"35\" class=\"wp-image-24824\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_582-2.png\" alt=\"IMG_582\" \/><\/p>\n<p>&#8211; Khi \u0111\u00f3: <img loading=\"lazy\" decoding=\"async\" width=\"102\" height=\"27\" class=\"wp-image-24825\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_583-2.png\" alt=\"IMG_583\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"30\" height=\"20\" class=\"wp-image-24826\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_584-2.png\" alt=\"IMG_584\" \/> t\u1ecda \u0111\u1ed9 <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24827\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_585-2.png\" alt=\"IMG_585\" \/> l\u00e0 nghi\u1ec7m c\u1ee7a hpt: <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24828\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_586-2.png\" alt=\"IMG_586\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"27\" class=\"wp-image-24829\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_587-2.png\" alt=\"IMG_587\" \/> .<\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 2:<\/em><\/strong><\/p>\n<p>&#8211; \u0110\u01b0a <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24830\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_588-2.png\" alt=\"IMG_588\" \/> v\u1ec1 d\u1ea1ng tham s\u1ed1. \u0110i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24831\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_589-2.png\" alt=\"IMG_589\" \/> \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi: <img loading=\"lazy\" decoding=\"async\" width=\"94\" height=\"63\" class=\"wp-image-24832\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_590-2.png\" alt=\"IMG_590\" \/><\/p>\n<p><strong><em>D\u1ea1ng 2. \u0110i\u1ec3m <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"30\" class=\"wp-image-24833\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_591-2.png\" alt=\"IMG_591\" \/><strong><em>\u0111\u1ed1i x\u1ee9ng v\u1edbi <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24834\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_592-2.png\" alt=\"IMG_592\" \/><strong><em> qua \u0111\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24835\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_593-2.png\" alt=\"IMG_593\" \/><strong><em>:<\/em><\/strong><\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 1:<\/em><\/strong><\/p>\n<p>&#8211; T\u00ecm h\u00ecnh chi\u1ebfu <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24836\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_594-2.png\" alt=\"IMG_594\" \/> c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24837\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_595-2.png\" alt=\"IMG_595\" \/> tr\u00ean <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"36\" class=\"wp-image-24838\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_596-2.png\" alt=\"IMG_596\" \/><\/p>\n<p>&#8211; X\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"24\" class=\"wp-image-24839\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_597-2.png\" alt=\"IMG_597\" \/> sao cho <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24840\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_598-2.png\" alt=\"IMG_598\" \/> l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n <img loading=\"lazy\" decoding=\"async\" width=\"51\" height=\"24\" class=\"wp-image-24841\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_599-1.png\" alt=\"IMG_599\" \/> (c\u00f4ng th\u1ee9c trung \u0111i\u1ebfm).<\/p>\n<p>\u00b7 <strong><em>C\u00e1ch 2:<\/em><\/strong><\/p>\n<p>&#8211; G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24842\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_600-1.png\" alt=\"IMG_600\" \/> l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n <img loading=\"lazy\" decoding=\"async\" width=\"51\" height=\"24\" class=\"wp-image-24843\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_601-1.png\" alt=\"IMG_601\" \/> . T\u00ednh to\u1ea1 \u0111\u1ed9 \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-24844\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_602-1.png\" alt=\"IMG_602\" \/> theo to\u1ea1 \u0111\u1ed9 c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"62\" height=\"26\" class=\"wp-image-24845\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_603-1.png\" alt=\"IMG_603\" \/> (c\u00f4ng th\u1ee9c trung \u0111i\u1ebfm).<\/p>\n<p>&#8211; Khi \u0111\u00f3 to\u1ea1 \u0111\u1ed9 c\u1ee7a \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"30\" class=\"wp-image-24846\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_604-1.png\" alt=\"IMG_604\" \/> \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi: <img loading=\"lazy\" decoding=\"async\" width=\"100\" height=\"63\" class=\"wp-image-24847\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_605-1.png\" alt=\"IMG_605\" \/> .<\/p>\n<p><strong><em>D\u1ea1ng 3. \u0110\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"27\" class=\"wp-image-24848\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_606-1.png\" alt=\"IMG_606\" \/><strong><em>\u0111\u1ed1i x\u1ee9ng \u0111\u01b0\u1eddng th\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24849\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_607-1.png\" alt=\"IMG_607\" \/><strong><em> qua m\u1eb7t ph\u1eb3ng <\/em><\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24850\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_608-1.png\" alt=\"IMG_608\" \/><\/p>\n<p>\u00b7 <strong><em>TH1<\/em><\/strong>: <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24851\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_609-1.png\" alt=\"IMG_609\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"18\" class=\"wp-image-24852\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_610-1.png\" alt=\"IMG_610\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24853\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_611-1.png\" alt=\"IMG_611\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"22\" class=\"wp-image-24854\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_612-1.png\" alt=\"IMG_612\" \/><\/p>\n<p>&#8211; X\u00e1c \u0111\u1ecbnh <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24855\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_613-1.png\" alt=\"IMG_613\" \/> l\u00e0 giao \u0111i\u1ec3m c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24856\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_614-1.png\" alt=\"IMG_614\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24857\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_615-1.png\" alt=\"IMG_615\" \/><\/p>\n<p>&#8211; L\u1ea5y \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"56\" height=\"24\" class=\"wp-image-24858\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_616-1.png\" alt=\"IMG_616\" \/> ( <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24859\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_617-1.png\" alt=\"IMG_617\" \/> b\u1ea5t k\u1ef3). T\u00ecm t\u1ecda \u0111\u1ed9 \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"30\" class=\"wp-image-24860\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_618-1.png\" alt=\"IMG_618\" \/> \u0111\u1ed1i x\u1ee9ng v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24861\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_619-1.png\" alt=\"IMG_619\" \/> qua <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24862\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_620-1.png\" alt=\"IMG_620\" \/> .<\/p>\n<p>&#8211; \u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"26\" class=\"wp-image-24863\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_621-1.png\" alt=\"IMG_621\" \/> ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"24\" class=\"wp-image-24864\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_622-1.png\" alt=\"IMG_622\" \/> .<\/p>\n<p>\u00b7 <strong><em>TH2<\/em><\/strong>: <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24865\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_623-1.png\" alt=\"IMG_623\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"26\" height=\"26\" class=\"wp-image-24866\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_624-1.png\" alt=\"IMG_624\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"36\" class=\"wp-image-24867\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_625-1.png\" alt=\"IMG_625\" \/><\/p>\n<p>&#8211; L\u1ea5y \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"56\" height=\"24\" class=\"wp-image-24868\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_626-1.png\" alt=\"IMG_626\" \/> ( <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24869\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_627-1.png\" alt=\"IMG_627\" \/> b\u1ea5t k\u1ef3). T\u00ecm t\u1ecda \u0111\u1ed9 \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"30\" class=\"wp-image-24870\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_628-1.png\" alt=\"IMG_628\" \/> \u0111\u1ed1i x\u1ee9ng v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"24\" class=\"wp-image-24871\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_629-1.png\" alt=\"IMG_629\" \/> qua <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"27\" class=\"wp-image-24872\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_630-1.png\" alt=\"IMG_630\" \/> .<\/p>\n<p>&#8211; \u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"26\" class=\"wp-image-24873\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_631-1.png\" alt=\"IMG_631\" \/> ch\u00ednh l\u00e0 \u0111\u01b0\u1eddng th\u1eb3ng qua <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"24\" class=\"wp-image-24874\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_632-1.png\" alt=\"IMG_632\" \/> v\u00e0 song song <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"24\" class=\"wp-image-24875\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_633-1.png\" alt=\"IMG_633\" \/> .<\/p>\n<h2><strong>C \u2013 B\u00c0I T\u1eacP TR\u1eaeC NGHI\u1ec6M<\/strong><\/h2>\n<p><strong>C\u00e2u 1: <\/strong>\u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24876\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_634-1.png\" alt=\"IMG_634\" \/> song song v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"194\" height=\"52\" class=\"wp-image-24877\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_635-1.png\" alt=\"IMG_635\" \/> v\u00e0 c\u1eaft c\u1ea3 hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"195\" height=\"51\" class=\"wp-image-24878\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_636-1.png\" alt=\"IMG_636\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"175\" height=\"51\" class=\"wp-image-24879\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_637-1.png\" alt=\"IMG_637\" \/> . Ph\u01b0\u01a1ng tr\u00ecnh n\u00e0o kh\u00f4ng ph\u1ea3i \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24880\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_638-1.png\" alt=\"IMG_638\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"191\" height=\"51\" class=\"wp-image-24881\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_639-1.png\" alt=\"IMG_639\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"204\" height=\"75\" class=\"wp-image-24882\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_640-1.png\" alt=\"IMG_640\" \/><\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"51\" class=\"wp-image-24883\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_641-1.png\" alt=\"IMG_641\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"191\" height=\"51\" class=\"wp-image-24884\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_642-1.png\" alt=\"IMG_642\" \/><\/p>\n<p><strong>C\u00e2u 2: <\/strong>Cho \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"115\" height=\"94\" class=\"wp-image-24885\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_643-1.png\" alt=\"IMG_643\" \/> v\u00e0 mp (P) : <img loading=\"lazy\" decoding=\"async\" width=\"104\" height=\"27\" class=\"wp-image-24886\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_644-1.png\" alt=\"IMG_644\" \/> . T\u00ecm ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng n\u1eb1m trong m\u1eb7t ph\u1eb3ng (P) c\u1eaft v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi (d).<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"88\" height=\"94\" class=\"wp-image-24887\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_645-1.png\" alt=\"IMG_645\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"88\" height=\"94\" class=\"wp-image-24888\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_646-1.png\" alt=\"IMG_646\" \/> <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"88\" height=\"94\" class=\"wp-image-24889\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_647-1.png\" alt=\"IMG_647\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"79\" height=\"94\" class=\"wp-image-24890\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_648-1.png\" alt=\"IMG_648\" \/><\/p>\n<p><strong>C\u00e2u 3: <\/strong>Trong kh\u00f4ng gian v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"25\" class=\"wp-image-24891\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_649-1.png\" alt=\"IMG_649\" \/> cho \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"163\" height=\"50\" class=\"wp-image-24892\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_650-1.png\" alt=\"IMG_650\" \/> v\u00e0 m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"195\" height=\"33\" class=\"wp-image-24893\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_651-1.png\" alt=\"IMG_651\" \/> Ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24894\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_652-1.png\" alt=\"IMG_652\" \/> n\u1eb1m trong <img loading=\"lazy\" decoding=\"async\" width=\"33\" height=\"33\" class=\"wp-image-24895\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_653-1.png\" alt=\"IMG_653\" \/> sao cho <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24896\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_654-1.png\" alt=\"IMG_654\" \/> c\u1eaft v\u00e0 vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"18\" height=\"22\" class=\"wp-image-24897\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_655-1.png\" alt=\"IMG_655\" \/> l\u00e0<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"173\" height=\"91\" class=\"wp-image-24898\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_656-1.png\" alt=\"IMG_656\" \/> . <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"91\" class=\"wp-image-24899\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_657-1.png\" alt=\"IMG_657\" \/> .<\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"180\" height=\"91\" class=\"wp-image-24900\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_658-1.png\" alt=\"IMG_658\" \/> . <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"91\" class=\"wp-image-24901\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_659-1.png\" alt=\"IMG_659\" \/> .<\/p>\n<p><strong>C\u00e2u 4: <\/strong>Trong kh\u00f4ng gian v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"27\" class=\"wp-image-24902\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_660-1.png\" alt=\"IMG_660\" \/> cho \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"167\" height=\"51\" class=\"wp-image-24903\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_661-1.png\" alt=\"IMG_661\" \/> v\u00e0 m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"184\" height=\"34\" class=\"wp-image-24904\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_662-1.png\" alt=\"IMG_662\" \/> Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24905\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_663-1.png\" alt=\"IMG_663\" \/> n\u1eb1m trong <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24906\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_664-1.png\" alt=\"IMG_664\" \/> sao cho <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24907\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_665-1.png\" alt=\"IMG_665\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24908\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_666-1.png\" alt=\"IMG_666\" \/> v\u00e0 kho\u1ea3ng c\u00e1ch gi\u1eefa hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24909\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_667-1.png\" alt=\"IMG_667\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24910\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_668-1.png\" alt=\"IMG_668\" \/> b\u1eb1ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"30\" class=\"wp-image-24911\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_669-1.png\" alt=\"IMG_669\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"184\" height=\"111\" class=\"wp-image-24912\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_670-1.png\" alt=\"IMG_670\" \/> . <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"175\" height=\"111\" class=\"wp-image-24913\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_671-1.png\" alt=\"IMG_671\" \/> .<\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"175\" height=\"111\" class=\"wp-image-24914\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_672-1.png\" alt=\"IMG_672\" \/> . <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"187\" height=\"111\" class=\"wp-image-24915\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_673-1.png\" alt=\"IMG_673\" \/><\/p>\n<p><strong>C\u00e2u 5: <\/strong>Cho hai \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"34\" class=\"wp-image-24916\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_674-1.png\" alt=\"IMG_674\" \/> v\u00e0 m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"172\" height=\"34\" class=\"wp-image-24917\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_675-1.png\" alt=\"IMG_675\" \/> . \u0110\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"23\" class=\"wp-image-24918\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_676-1.png\" alt=\"IMG_676\" \/> n\u1eb1m tr\u00ean <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24919\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_677-1.png\" alt=\"IMG_677\" \/> sao cho m\u1ecdi \u0111i\u1ec3m c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"23\" class=\"wp-image-24920\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_678-1.png\" alt=\"IMG_678\" \/> c\u00e1ch \u0111\u1ec1u 2 \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"46\" height=\"27\" class=\"wp-image-24921\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_679-1.png\" alt=\"IMG_679\" \/> c\u00f3 ph\u01b0\u01a1ng tr\u00ecnh l\u00e0<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"98\" height=\"94\" class=\"wp-image-24922\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_680-1.png\" alt=\"IMG_680\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"98\" height=\"94\" class=\"wp-image-24923\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_681-1.png\" alt=\"IMG_681\" \/> <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"98\" height=\"94\" class=\"wp-image-24924\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_682-1.png\" alt=\"IMG_682\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"98\" height=\"94\" class=\"wp-image-24925\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_683-1.png\" alt=\"IMG_683\" \/><\/p>\n<p><strong>C\u00e2u 6: <\/strong>Trong kh\u00f4ng gian v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"27\" class=\"wp-image-24926\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_684-1.png\" alt=\"IMG_684\" \/> cho \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"171\" height=\"51\" class=\"wp-image-24927\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_685-1.png\" alt=\"IMG_685\" \/> v\u00e0 m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"174\" height=\"34\" class=\"wp-image-24928\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_686-1.png\" alt=\"IMG_686\" \/> G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"22\" class=\"wp-image-24929\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_687-1.png\" alt=\"IMG_687\" \/> l\u00e0 giao \u0111i\u1ec3m c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"34\" class=\"wp-image-24930\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_688-1.png\" alt=\"IMG_688\" \/> T\u00ecm <img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"34\" class=\"wp-image-24931\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_689-1.png\" alt=\"IMG_689\" \/> sao cho <img loading=\"lazy\" decoding=\"async\" width=\"31\" height=\"22\" class=\"wp-image-24932\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_690-1.png\" alt=\"IMG_690\" \/> vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24933\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_691-1.png\" alt=\"IMG_691\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"99\" height=\"30\" class=\"wp-image-24934\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_692-1.png\" alt=\"IMG_692\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"127\" height=\"71\" class=\"wp-image-24935\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_693-1.png\" alt=\"IMG_693\" \/> . <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"127\" height=\"71\" class=\"wp-image-24936\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_694-1.png\" alt=\"IMG_694\" \/> .<\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"127\" height=\"71\" class=\"wp-image-24937\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_695-1.png\" alt=\"IMG_695\" \/> . <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"116\" height=\"71\" class=\"wp-image-24938\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_696-1.png\" alt=\"IMG_696\" \/> .<\/p>\n<p><strong>C\u00e2u 7: <\/strong>Trong kh\u00f4ng gian <img loading=\"lazy\" decoding=\"async\" width=\"51\" height=\"27\" class=\"wp-image-24939\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_697-1.png\" alt=\"IMG_697\" \/> cho hai m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"356\" height=\"34\" class=\"wp-image-24940\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_698-1.png\" alt=\"IMG_698\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_698-1.png 356w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_698-1-300x29.png 300w\" sizes=\"(max-width: 356px) 100vw, 356px\" \/> Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24941\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_699-1.png\" alt=\"IMG_699\" \/> \u0111i qua <img loading=\"lazy\" decoding=\"async\" width=\"86\" height=\"34\" class=\"wp-image-24942\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_700-1.png\" alt=\"IMG_700\" \/> n\u1eb1m trong m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"36\" height=\"34\" class=\"wp-image-24943\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_701-1.png\" alt=\"IMG_701\" \/> v\u00e0 t\u1ea1o v\u1edbi m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24944\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_702-1.png\" alt=\"IMG_702\" \/> m\u1ed9t g\u00f3c b\u1eb1ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"27\" class=\"wp-image-24945\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_703-1.png\" alt=\"IMG_703\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"215\" height=\"94\" class=\"wp-image-24946\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_704-1.png\" alt=\"IMG_704\" \/> . <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"94\" class=\"wp-image-24947\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_705-1.png\" alt=\"IMG_705\" \/> .<\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"235\" height=\"94\" class=\"wp-image-24948\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_706-1.png\" alt=\"IMG_706\" \/> . <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"215\" height=\"94\" class=\"wp-image-24949\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_707-1.png\" alt=\"IMG_707\" \/><\/p>\n<p><strong>C\u00e2u 8: <\/strong>Trong kh\u00f4ng gian v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 <img loading=\"lazy\" decoding=\"async\" width=\"51\" height=\"27\" class=\"wp-image-24950\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_708-1.png\" alt=\"IMG_708\" \/> cho h\u00ecnh thang c\u00e2n <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"24\" class=\"wp-image-24951\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_709-1.png\" alt=\"IMG_709\" \/> c\u00f3 hai \u0111\u00e1y <img loading=\"lazy\" decoding=\"async\" width=\"70\" height=\"27\" class=\"wp-image-24952\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_710-1.png\" alt=\"IMG_710\" \/> th\u1ecfa m\u00e3n <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"24\" class=\"wp-image-24953\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_711-1.png\" alt=\"IMG_711\" \/> v\u00e0 di\u1ec7n t\u00edch b\u1eb1ng 27; \u0111\u1ec9nh <img loading=\"lazy\" decoding=\"async\" width=\"107\" height=\"34\" class=\"wp-image-24954\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_712-1.png\" alt=\"IMG_712\" \/> ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng ch\u1ee9a c\u1ea1nh <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"24\" class=\"wp-image-24955\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_713-1.png\" alt=\"IMG_713\" \/> l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"171\" height=\"51\" class=\"wp-image-24956\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_714-1.png\" alt=\"IMG_714\" \/> T\u00ecm t\u1ecda \u0111\u1ed9 c\u00e1c \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-24957\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_715-1.png\" alt=\"IMG_715\" \/> bi\u1ebft ho\u00e0nh \u0111\u1ed9 \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"20\" height=\"22\" class=\"wp-image-24958\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_716-1.png\" alt=\"IMG_716\" \/> l\u1edbn h\u01a1n ho\u00e0nh \u0111\u1ed9 \u0111i\u1ec3m <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-24959\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_717-1.png\" alt=\"IMG_717\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"102\" height=\"34\" class=\"wp-image-24960\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_718-1.png\" alt=\"IMG_718\" \/> . <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"102\" height=\"34\" class=\"wp-image-24961\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_719-1.png\" alt=\"IMG_719\" \/> . <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"34\" class=\"wp-image-24962\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_720-1.png\" alt=\"IMG_720\" \/> . <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"34\" class=\"wp-image-24963\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_721-1.png\" alt=\"IMG_721\" \/><\/p>\n<p><strong>C\u00e2u 9: <\/strong>Trong kh\u00f4ng gian v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 <img loading=\"lazy\" decoding=\"async\" width=\"51\" height=\"27\" class=\"wp-image-24964\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_722-1.png\" alt=\"IMG_722\" \/> cho hai \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"175\" height=\"51\" class=\"wp-image-24965\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_723-1.png\" alt=\"IMG_723\" \/> <img loading=\"lazy\" decoding=\"async\" width=\"194\" height=\"51\" class=\"wp-image-24966\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_724-1.png\" alt=\"IMG_724\" \/> v\u00e0 m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"186\" height=\"34\" class=\"wp-image-24967\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_725-1.png\" alt=\"IMG_725\" \/> L\u1eadp ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng d song song v\u1edbi m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24968\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_726-1.png\" alt=\"IMG_726\" \/> v\u00e0 c\u1eaft <img loading=\"lazy\" decoding=\"async\" width=\"47\" height=\"31\" class=\"wp-image-24969\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_727-1.png\" alt=\"IMG_727\" \/> l\u1ea7n l\u01b0\u1ee3t t\u1ea1i <img loading=\"lazy\" decoding=\"async\" width=\"40\" height=\"27\" class=\"wp-image-24970\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_728-1.png\" alt=\"IMG_728\" \/> sao cho \u0111\u1ed9 d\u00e0i \u0111o\u1ea1n <img loading=\"lazy\" decoding=\"async\" width=\"34\" height=\"22\" class=\"wp-image-24971\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_729-1.png\" alt=\"IMG_729\" \/> \u0111\u1ea1t gi\u00e1 tr\u1ecb nh\u1ecf nh\u1ea5t.<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"191\" height=\"51\" class=\"wp-image-24972\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_730-1.png\" alt=\"IMG_730\" \/> . <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"191\" height=\"51\" class=\"wp-image-24973\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_731-1.png\" alt=\"IMG_731\" \/> .<\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"191\" height=\"51\" class=\"wp-image-24974\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_732-1.png\" alt=\"IMG_732\" \/> . <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"194\" height=\"51\" class=\"wp-image-24975\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_733-1.png\" alt=\"IMG_733\" \/><\/p>\n<p><strong>C\u00e2u 10: <\/strong>Trong kh\u00f4ng gian v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 <img loading=\"lazy\" decoding=\"async\" width=\"51\" height=\"27\" class=\"wp-image-24976\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_734-1.png\" alt=\"IMG_734\" \/> cho \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"190\" height=\"51\" class=\"wp-image-24977\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_735-1.png\" alt=\"IMG_735\" \/> v\u00e0 m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"175\" height=\"34\" class=\"wp-image-24978\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_736-1.png\" alt=\"IMG_736\" \/> G\u1ecdi <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"22\" class=\"wp-image-24979\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_737-1.png\" alt=\"IMG_737\" \/> l\u00e0 giao \u0111i\u1ec3m gi\u1eefa <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24980\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_738-1.png\" alt=\"IMG_738\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24981\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_739-1.png\" alt=\"IMG_739\" \/> . Vi\u1ebft ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24982\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_740-1.png\" alt=\"IMG_740\" \/> n\u1eb1m trong m\u1eb7t ph\u1eb3ng <img loading=\"lazy\" decoding=\"async\" width=\"35\" height=\"34\" class=\"wp-image-24983\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_741-1.png\" alt=\"IMG_741\" \/> , vu\u00f4ng g\u00f3c v\u1edbi <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-24984\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_742-1.png\" alt=\"IMG_742\" \/> \u0111\u1ed3ng th\u1eddi kho\u1ea3ng c\u00e1ch t\u1eeb <img loading=\"lazy\" decoding=\"async\" width=\"27\" height=\"22\" class=\"wp-image-24985\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_743-1.png\" alt=\"IMG_743\" \/> \u0111\u1ebfn <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"22\" class=\"wp-image-24986\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_744-1.png\" alt=\"IMG_744\" \/> b\u1eb1ng <img loading=\"lazy\" decoding=\"async\" width=\"46\" height=\"30\" class=\"wp-image-24987\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_745-1.png\" alt=\"IMG_745\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"202\" height=\"111\" class=\"wp-image-24988\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_746-1.png\" alt=\"IMG_746\" \/> . <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"202\" height=\"111\" class=\"wp-image-24989\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_747-1.png\" alt=\"IMG_747\" \/> .<\/p>\n<p><strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"202\" height=\"111\" class=\"wp-image-24990\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_748-1.png\" alt=\"IMG_748\" \/> . <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"202\" height=\"111\" class=\"wp-image-24991\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_749-1.png\" alt=\"IMG_749\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>A &#8211; L\u00dd THUY\u1ebeT CHUNG 1. \u0110\u1ecbnh ngh\u0129a Ph\u01b0\u01a1ng tr\u00ecnh tham s\u1ed1 c\u1ee7a \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua \u0111i\u1ec3m v\u00e0 c\u00f3 vec t\u01a1 ch\u1ec9 ph\u01b0\u01a1ng : N\u1ebfu \u0111\u1ec1u kh\u00e1c kh\u00f4ng. Ph\u01b0\u01a1ng tr\u00ecnh \u0111\u01b0\u1eddng th\u1eb3ng vi\u1ebft d\u01b0\u1edbi d\u1ea1ng ch\u00ednh t\u1eafc nh\u01b0 sau: Ngo\u00e0i ra \u0111\u01b0\u1eddng th\u1eb3ng c\u00f2n c\u00f3 d\u1ea1ng t\u1ed5ng qu\u00e1t l\u00e0: v\u1edbi th\u1ecfa 2. V\u1ecb tr\u00ed [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[43],"tags":[],"class_list":["post-24497","post","type-post","status-publish","format-standard","hentry","category-toan-lop-12"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/24497","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=24497"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/24497\/revisions"}],"predecessor-version":[{"id":24992,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/24497\/revisions\/24992"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=24497"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=24497"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=24497"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}