{"id":19364,"date":"2021-12-17T13:02:44","date_gmt":"2021-12-17T06:02:44","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=19364"},"modified":"2021-12-17T13:02:46","modified_gmt":"2021-12-17T06:02:46","slug":"tap-hop","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/tap-hop\/","title":{"rendered":"T\u1eacP H\u1ee2P"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n<p><strong>I \u2013 L\u00dd THUY\u1ebeT<\/strong>:<\/p>\n<p>1. <strong>T\u1eadp h\u1ee3p<\/strong>: (c\u00f2n g\u1ecdi l\u00e0 t\u1eadp) l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n c\u1ee7a To\u00e1n h\u1ecdc, kh\u00f4ng \u0111\u1ecbnh ngh\u0129a.<\/p>\n<p>&#8211; Th\u01b0\u1eddng k\u00ed hi\u1ec7u: <img decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19365\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_256-5.png\" alt=\"IMG_256\" \/> , <img decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19366\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_257-4.png\" alt=\"IMG_257\" \/> , \u2026<\/p>\n<p>*. \u0110\u1ec3 ch\u1ec9 <img decoding=\"async\" width=\"17\" height=\"19\" class=\"wp-image-19367\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_258-5.png\" alt=\"IMG_258\" \/> l\u00e0 m\u1ed9t ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"25\" height=\"28\" class=\"wp-image-19368\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_259-4.png\" alt=\"IMG_259\" \/> ta vi\u1ebft <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"24\" class=\"wp-image-19369\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_260-5.png\" alt=\"IMG_260\" \/> (\u0111\u1ecdc l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"19\" class=\"wp-image-19370\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_261-2.png\" alt=\"IMG_261\" \/> thu\u1ed9c <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19371\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_262-4.png\" alt=\"IMG_262\" \/> ).<\/p>\n<p>**. \u0110\u1ec3 ch\u1ec9 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"19\" class=\"wp-image-19372\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_263-4.png\" alt=\"IMG_263\" \/> kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"25\" height=\"28\" class=\"wp-image-19373\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_264-4.png\" alt=\"IMG_264\" \/> ta vi\u1ebft <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"24\" class=\"wp-image-19374\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_265-3.png\" alt=\"IMG_265\" \/> (\u0111\u1ecdc l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"19\" class=\"wp-image-19375\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_266-4.png\" alt=\"IMG_266\" \/> kh\u00f4ng thu\u1ed9c <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19376\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_267-4.png\" alt=\"IMG_267\" \/> ).<\/p>\n<p>&#8211; Hai c\u00e1ch th\u01b0\u1eddng d\u00f9ng \u0111\u1ec3 <strong>x\u00e1c \u0111\u1ecbnh<\/strong> m\u1ed9t t\u1eadp h\u1ee3p:<\/p>\n<p>*. Li\u1ec7t k\u00ea c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p.<\/p>\n<p>**. Ch\u1ec9 ra t\u00ednh ch\u1ea5t \u0111\u1eb7c tr\u01b0ng cho c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p.<\/p>\n<p>Ch\u00fa \u00fd: Ng\u01b0\u1eddi ta th\u01b0\u1eddng minh h\u1ecda t\u1eadp h\u1ee3p b\u1eb1ng m\u1ed9t h\u00ecnh ph\u1eb3ng \u0111\u01b0\u1ee3c bao quanh b\u1edfi m\u1ed9t \u0111\u01b0\u1eddng k\u00edn, g\u1ecdi l\u00e0 bi\u1ec3u \u0111\u1ed3 Ven.<\/p>\n<p>2. <strong>T\u1eadp h\u1ee3p r\u1ed7ng<\/strong>: l\u00e0 t\u1eadp h\u1ee3p kh\u00f4ng ch\u1ee9a ph\u1ea7n t\u1eed n\u00e0o. K\u00ed hi\u1ec7u: <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"24\" class=\"wp-image-19377\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_268-4.png\" alt=\"IMG_268\" \/><\/p>\n<p>3. <strong>T\u1eadp h\u1ee3p con<\/strong>: N\u1ebfu m\u1ecdi ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19378\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_269-4.png\" alt=\"IMG_269\" \/> \u0111\u1ec1u l\u00e0 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19379\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_270-2.png\" alt=\"IMG_270\" \/> th\u00ec ta n\u00f3i <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19380\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_271-4.png\" alt=\"IMG_271\" \/> l\u00e0 <strong>m\u1ed9t t\u1eadp h\u1ee3p con<\/strong> c\u1ee7a B, vi\u1ebft l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"22\" class=\"wp-image-19381\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_272-4.png\" alt=\"IMG_272\" \/> ( \u0111\u1ecdc l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19382\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_273-3.png\" alt=\"IMG_273\" \/> ch\u1ee9a trong <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19383\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_274-4.png\" alt=\"IMG_274\" \/> ).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"213\" height=\"28\" class=\"wp-image-19384\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_275-3.png\" alt=\"IMG_275\" \/><\/p>\n<p>T\u00ednh ch\u1ea5t:<\/p>\n<table>\n<tbody>\n<tr>\n<td>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"22\" class=\"wp-image-19385\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_276-4.png\" alt=\"IMG_276\" \/> v\u1edbi m\u1ecdi t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19386\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_277-4.png\" alt=\"IMG_277\" \/><\/p>\n<\/td>\n<td>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"22\" class=\"wp-image-19387\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_278-4.png\" alt=\"IMG_278\" \/> \u00a0\u00a0v\u00e0 \u00a0 <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"24\" class=\"wp-image-19388\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_279-2.png\" alt=\"IMG_279\" \/> \u00a0th\u00ec \u00a0\u00a0 <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"24\" class=\"wp-image-19389\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_280-4.png\" alt=\"IMG_280\" \/><\/p>\n<\/td>\n<td>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"59\" height=\"24\" class=\"wp-image-19390\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_281-4.png\" alt=\"IMG_281\" \/> \u00a0v\u1edbi m\u1ecdi t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19391\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_282-4.png\" alt=\"IMG_282\" \/><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u00a0<\/p>\n<p>4. <strong>T\u1eadp h\u1ee3p b\u1eb1ng nhau<\/strong>: <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"22\" class=\"wp-image-19392\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_283-4.png\" alt=\"IMG_283\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"22\" class=\"wp-image-19393\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_284-4.png\" alt=\"IMG_284\" \/> th\u00ec ta n\u00f3i t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19394\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_285-4.png\" alt=\"IMG_285\" \/> b\u1eb1ng t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19395\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_286-3.png\" alt=\"IMG_286\" \/> , vi\u1ebft l\u00e0: <img loading=\"lazy\" decoding=\"async\" width=\"54\" height=\"22\" class=\"wp-image-19396\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_287-4.png\" alt=\"IMG_287\" \/> .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"213\" height=\"28\" class=\"wp-image-19397\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_288-4.png\" alt=\"IMG_288\" \/><\/p>\n<p><strong>C\u00c1C D\u1ea0NG TO\u00c1N<\/strong><\/p>\n<p><strong>Ch\u1ee7 \u0111\u1ec1 1. PH\u1ea6N T\u1eec &#8211; T\u1eacP H\u1ee2P<\/strong><\/p>\n<p><strong>A \u2013 V\u00cd D\u1ee4<\/strong>:<\/p>\n<p><strong>Vd1:<\/strong> K\u00ed hi\u1ec7u n\u00e0o sau \u0111\u00e2y d\u00f9ng \u0111\u1ec3 vi\u1ebft \u0111\u00fang m\u1ec7nh \u0111\u1ec1 \u201c <img loading=\"lazy\" decoding=\"async\" width=\"15\" height=\"24\" class=\"wp-image-19398\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_289-5.png\" alt=\"IMG_289\" \/> l\u00e0 s\u1ed1 t\u1ef1 nhi\u00ean\u201d?<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"24\" class=\"wp-image-19399\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_290-5.png\" alt=\"IMG_290\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"53\" height=\"24\" class=\"wp-image-19400\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_291-5.png\" alt=\"IMG_291\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_291-5.png 53w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_291-5-50x24.png 50w\" sizes=\"(max-width: 53px) 100vw, 53px\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"54\" height=\"24\" class=\"wp-image-19401\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_292-5.png\" alt=\"IMG_292\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"54\" height=\"24\" class=\"wp-image-19402\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_293-5.png\" alt=\"IMG_293\" \/><\/p>\n<p>L\u1eddi gi\u1ea3i<\/p>\n<p><strong>Ch\u1ecdn B: <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"53\" height=\"24\" class=\"wp-image-19403\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_294-5.png\" alt=\"IMG_294\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_294-5.png 53w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_294-5-50x24.png 50w\" sizes=\"(max-width: 53px) 100vw, 53px\" \/><\/p>\n<p><strong>Vd2: <\/strong> K\u00ed hi\u1ec7u n\u00e0o sau \u0111\u00e2y d\u00f9ng \u0111\u1ec3 vi\u1ebft \u0111\u00fang m\u1ec7nh \u0111\u1ec1 \u201c <img loading=\"lazy\" decoding=\"async\" width=\"32\" height=\"29\" class=\"wp-image-19404\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_295-5.png\" alt=\"IMG_295\" \/> kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ed1 h\u1eefu t\u1ec9 \u201d<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"32\" class=\"wp-image-19405\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_296-5.png\" alt=\"IMG_296\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"74\" height=\"32\" class=\"wp-image-19406\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_297-5.png\" alt=\"IMG_297\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"68\" height=\"32\" class=\"wp-image-19407\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_298-5.png\" alt=\"IMG_298\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"68\" height=\"32\" class=\"wp-image-19408\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_299-5.png\" alt=\"IMG_299\" \/><\/p>\n<p>L\u1eddi gi\u1ea3i<\/p>\n<p><strong>Ch\u1ecdn C: <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"68\" height=\"32\" class=\"wp-image-19409\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_300-5.png\" alt=\"IMG_300\" \/><\/p>\n<p><strong>Vd3<\/strong>: Li\u1ec7t k\u00ea c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a c\u00e1c t\u1eadp h\u1ee3p:<\/p>\n<p>a\/. T\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19410\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_301-5.png\" alt=\"IMG_301\" \/> c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean chia h\u1ebft cho 3 v\u00e0 nh\u1ecf h\u01a1n 25:<\/p>\n<p>b\/. <img loading=\"lazy\" decoding=\"async\" width=\"248\" height=\"33\" class=\"wp-image-19411\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_302-5.png\" alt=\"IMG_302\" \/><\/p>\n<p>c\/. <img loading=\"lazy\" decoding=\"async\" width=\"302\" height=\"37\" class=\"wp-image-19412\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_303-5.png\" alt=\"IMG_303\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_303-5.png 302w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_303-5-300x37.png 300w\" sizes=\"(max-width: 302px) 100vw, 302px\" \/><\/p>\n<p>d\/. <img loading=\"lazy\" decoding=\"async\" width=\"217\" height=\"33\" class=\"wp-image-19413\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_304-5.png\" alt=\"IMG_304\" \/><\/p>\n<p>L\u1eddi gi\u1ea3i<\/p>\n<p>a\/. C\u00e1ch 1: <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19414\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_305-5.png\" alt=\"IMG_305\" \/> = {0; 3; 6; 9; 12; 15; 18; 21; 24}.<\/p>\n<p>C\u00e1ch 2: L\u00e0 b\u1ed9i c\u1ee7a 3 v\u00e0 nh\u1ecf h\u01a1n 25.<\/p>\n<p>b\/. C\u00e1ch 1: <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19415\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_306-5.png\" alt=\"IMG_306\" \/> = {0; 1; 2; 3}<\/p>\n<p>C\u00e1ch 2: B\u1ea5m m\u00e1y t\u00ednh<\/p>\n<p>c\/. <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19416\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_307-5.png\" alt=\"IMG_307\" \/> = { \u2013 1; 3}: Gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh t\u00edch.<\/p>\n<p>d\/. <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"22\" class=\"wp-image-19417\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_308-5.png\" alt=\"IMG_308\" \/> = {\u20133; \u20131; 1; 3; 5}:<\/p>\n<p><strong>C\u00e1ch gi\u1ea3i<\/strong>: B\u1ea5m m\u00e1y t\u00ednh bi\u1ec3u th\u1ee9c 2k+1. Nh\u1eadp c\u00e1c gi\u00e1 tr\u1ecb c\u1ee7a k <img loading=\"lazy\" decoding=\"async\" width=\"137\" height=\"28\" class=\"wp-image-19418\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_309-5.png\" alt=\"IMG_309\" \/><\/p>\n<p>\u00a0<\/p>\n<p>B \u2013 <strong>B\u00c0I T\u1eacP T\u1ef0 LUY\u1ec6N:<\/strong><\/p>\n<p><strong>C\u00e2u 1. <\/strong>Cho <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19419\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_310-5.png\" alt=\"IMG_310\" \/> l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p. Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 sau, m\u1ec7nh \u0111\u1ec1 n\u00e0o \u0111\u00fang<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"56\" height=\"24\" class=\"wp-image-19420\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_311-5.png\" alt=\"IMG_311\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"59\" height=\"24\" class=\"wp-image-19421\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_312-5.png\" alt=\"IMG_312\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"24\" class=\"wp-image-19422\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_313-5.png\" alt=\"IMG_313\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"74\" height=\"33\" class=\"wp-image-19423\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_314-5.png\" alt=\"IMG_314\" \/><\/p>\n<p><strong>C\u00e2u 2. <\/strong>Cho <img loading=\"lazy\" decoding=\"async\" width=\"17\" height=\"19\" class=\"wp-image-19424\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_315-5.png\" alt=\"IMG_315\" \/> l\u00e0 m\u1ed9t ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"24\" class=\"wp-image-19425\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_316-5.png\" alt=\"IMG_316\" \/> X\u00e9t c\u00e1c m\u1ec7nh \u0111\u1ec1 sau:<\/p>\n<p>(I) <img loading=\"lazy\" decoding=\"async\" width=\"53\" height=\"24\" class=\"wp-image-19426\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_317-5.png\" alt=\"IMG_317\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_317-5.png 53w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_317-5-50x24.png 50w\" sizes=\"(max-width: 53px) 100vw, 53px\" \/> (II) <img loading=\"lazy\" decoding=\"async\" width=\"68\" height=\"33\" class=\"wp-image-19427\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_318-5.png\" alt=\"IMG_318\" \/> (III) <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"24\" class=\"wp-image-19428\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_319-5.png\" alt=\"IMG_319\" \/> (IV) <img loading=\"lazy\" decoding=\"async\" width=\"72\" height=\"33\" class=\"wp-image-19429\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_320-5.png\" alt=\"IMG_320\" \/><\/p>\n<p>Trong c\u00e1c m\u1ec7nh \u0111\u1ec1 tr\u00ean, m\u1ec7nh \u0111\u1ec1 n\u00e0o \u0111\u00fang?<\/p>\n<p><strong>A. <\/strong>I v\u00e0 II. <strong>B. <\/strong>I v\u00e0 III. <strong>C.<\/strong> I v\u00e0 IV. <strong>D. <\/strong>II v\u00e0 IV.<\/p>\n<p><strong>C\u00e2u 3. <\/strong>M\u1ec7nh \u0111\u1ec1 n\u00e0o sau \u0111\u00e2y t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi m\u1ec7nh \u0111\u1ec1 <img loading=\"lazy\" decoding=\"async\" width=\"67\" height=\"24\" class=\"wp-image-19430\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_321-5.png\" alt=\"IMG_321\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"82\" height=\"28\" class=\"wp-image-19431\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_322-5.png\" alt=\"IMG_322\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"81\" height=\"28\" class=\"wp-image-19432\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_323-5.png\" alt=\"IMG_323\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"81\" height=\"28\" class=\"wp-image-19433\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_324-5.png\" alt=\"IMG_324\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"88\" height=\"28\" class=\"wp-image-19434\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_325-5.png\" alt=\"IMG_325\" \/><\/p>\n<p><strong>\u0110\u00e1p \u00e1n: 1C, 2C, 3B. <\/strong><\/p>\n<p><strong>Ch\u1ee7 \u0111\u1ec1 2. X\u00c1C \u0110\u1ecaNH T\u1eacP H\u1ee2P<\/strong><\/p>\n<p><strong>A \u2013 V\u00cd D\u1ee4<\/strong>:<\/p>\n<p><strong>Vd1: <\/strong>H\u00e3y li\u1ec7t k\u00ea c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"237\" height=\"40\" class=\"wp-image-19435\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_326-5.png\" alt=\"IMG_326\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"33\" class=\"wp-image-19436\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_327-5.png\" alt=\"IMG_327\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"33\" class=\"wp-image-19437\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_328-5.png\" alt=\"IMG_328\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"84\" height=\"57\" class=\"wp-image-19438\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_329-5.png\" alt=\"IMG_329\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"97\" height=\"57\" class=\"wp-image-19439\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_330-5.png\" alt=\"IMG_330\" \/><\/p>\n<p>L\u1eddi gi\u1ea3i<\/p>\n<p>Ch\u1ecdn D: <img loading=\"lazy\" decoding=\"async\" width=\"97\" height=\"57\" class=\"wp-image-19440\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_331-5.png\" alt=\"IMG_331\" \/><\/p>\n<p><strong>C\u00e1ch gi\u1ea3i<\/strong>: Gi\u1ea3i pt b\u1eadc hai 2x<sup>2<\/sup> \u2013 5x + 3 = 0 \u00f3 x = 1; x = 3\/2.<\/p>\n<p><strong>Vd2<\/strong>: T\u00ecm m\u1ed9t t\u00ednh ch\u1ea5t \u0111\u1eb7c tr\u01b0ng cho c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a m\u1ed7i t\u1eadp h\u1ee3p sau:<\/p>\n<p>a\/. <img loading=\"lazy\" decoding=\"async\" width=\"135\" height=\"28\" class=\"wp-image-19441\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_332-5.png\" alt=\"IMG_332\" \/> b\/. <img loading=\"lazy\" decoding=\"async\" width=\"187\" height=\"57\" class=\"wp-image-19442\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_333-5.png\" alt=\"IMG_333\" \/><\/p>\n<p>L\u1eddi gi\u1ea3i<\/p>\n<p>a\/. <img loading=\"lazy\" decoding=\"async\" width=\"177\" height=\"31\" class=\"wp-image-19443\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_334-5.png\" alt=\"IMG_334\" \/> b\/. <img loading=\"lazy\" decoding=\"async\" width=\"213\" height=\"71\" class=\"wp-image-19444\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_335-5.png\" alt=\"IMG_335\" \/><\/p>\n<p>B \u2013 <strong>B\u00c0I T\u1eacP T\u1ef0 LUY\u1ec6N:<\/strong><\/p>\n<p><strong>C\u00e2u 1. <\/strong>Cho t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"371\" height=\"43\" class=\"wp-image-19445\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_336-5.png\" alt=\"IMG_336\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_336-5.png 371w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_336-5-300x35.png 300w\" sizes=\"(max-width: 371px) 100vw, 371px\" \/> T\u00ednh t\u1ed5ng <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-19446\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_337-5.png\" alt=\"IMG_337\" \/> c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"28\" height=\"24\" class=\"wp-image-19447\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_338-5.png\" alt=\"IMG_338\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"53\" height=\"24\" class=\"wp-image-19448\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_339-5.png\" alt=\"IMG_339\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_339-5.png 53w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_339-5-50x24.png 50w\" sizes=\"(max-width: 53px) 100vw, 53px\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"53\" class=\"wp-image-19449\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_340-5.png\" alt=\"IMG_340\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"53\" height=\"24\" class=\"wp-image-19450\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_341-5.png\" alt=\"IMG_341\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_341-5.png 53w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_341-5-50x24.png 50w\" sizes=\"(max-width: 53px) 100vw, 53px\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"53\" height=\"24\" class=\"wp-image-19451\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_342-5.png\" alt=\"IMG_342\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_342-5.png 53w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_342-5-50x24.png 50w\" sizes=\"(max-width: 53px) 100vw, 53px\" \/><\/p>\n<p><strong>C\u00e2u 2. <\/strong>Cho t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"385\" height=\"50\" class=\"wp-image-19452\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_343-5.png\" alt=\"IMG_343\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_343-5.png 385w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_343-5-300x39.png 300w\" sizes=\"(max-width: 385px) 100vw, 385px\" \/> H\u1ecfi t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-19453\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_344-5.png\" alt=\"IMG_344\" \/> c\u00f3 bao nhi\u00eau ph\u1ea7n t\u1eed?<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-19454\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_345-5.png\" alt=\"IMG_345\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19455\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_346-5.png\" alt=\"IMG_346\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19456\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_347-5.png\" alt=\"IMG_347\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19457\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_348-5.png\" alt=\"IMG_348\" \/><\/p>\n<p><strong>C\u00e2u 3. <\/strong>H\u00e3y li\u1ec7t k\u00ea c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"297\" height=\"43\" class=\"wp-image-19458\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_349-5.png\" alt=\"IMG_349\" \/><\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"106\" height=\"40\" class=\"wp-image-19459\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_350-5.png\" alt=\"IMG_350\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"177\" height=\"40\" class=\"wp-image-19460\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_351-5.png\" alt=\"IMG_351\" \/><\/p>\n<p><strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"102\" height=\"33\" class=\"wp-image-19461\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_352-5.png\" alt=\"IMG_352\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"132\" height=\"40\" class=\"wp-image-19462\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_353-5.png\" alt=\"IMG_353\" \/><\/p>\n<p><strong>C\u00e2u 4. <\/strong>H\u00e3y li\u1ec7t k\u00ea c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"216\" height=\"40\" class=\"wp-image-19463\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_354-5.png\" alt=\"IMG_354\" \/><\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"24\" class=\"wp-image-19464\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_355-5.png\" alt=\"IMG_355\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"75\" height=\"33\" class=\"wp-image-19465\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_356-5.png\" alt=\"IMG_356\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"64\" height=\"24\" class=\"wp-image-19466\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_357-5.png\" alt=\"IMG_357\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"81\" height=\"33\" class=\"wp-image-19467\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_358-5.png\" alt=\"IMG_358\" \/><\/p>\n<p><strong>C\u00e2u 5. <\/strong>Cho t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"107\" height=\"33\" class=\"wp-image-19468\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_359-5.png\" alt=\"IMG_359\" \/> l\u00e0 \u01b0\u1edbc chung c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"28\" class=\"wp-image-19469\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_360-5.png\" alt=\"IMG_360\" \/> . H\u00e3y li\u1ec7t k\u00ea c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19470\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_361-5.png\" alt=\"IMG_361\" \/> .<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"160\" height=\"33\" class=\"wp-image-19471\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_362-5.png\" alt=\"IMG_362\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"160\" height=\"33\" class=\"wp-image-19472\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_363-4.png\" alt=\"IMG_363\" \/><\/p>\n<p><strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"170\" height=\"33\" class=\"wp-image-19473\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_364-5.png\" alt=\"IMG_364\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"128\" height=\"33\" class=\"wp-image-19474\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_365-5.png\" alt=\"IMG_365\" \/><\/p>\n<p><strong>C\u00e2u 6. <\/strong>H\u1ecfi t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"204\" height=\"40\" class=\"wp-image-19475\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_366-5.png\" alt=\"IMG_366\" \/> c\u00f3 bao nhi\u00eau ph\u1ea7n t\u1eed?<\/p>\n<p><strong>A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-19476\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_367-5.png\" alt=\"IMG_367\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19477\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_368-5.png\" alt=\"IMG_368\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19478\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_369-5.png\" alt=\"IMG_369\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19479\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_370-5.png\" alt=\"IMG_370\" \/><\/p>\n<p><strong>C\u00e2u 7.<\/strong> T\u1eadp h\u1ee3p n\u00e0o sau \u0111\u00e2y l\u00e0 t\u1eadp r\u1ed7ng?<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"77\" height=\"33\" class=\"wp-image-19480\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_371-5.png\" alt=\"IMG_371\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"311\" height=\"43\" class=\"wp-image-19481\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_372-5.png\" alt=\"IMG_372\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_372-5.png 311w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_372-5-300x41.png 300w\" sizes=\"(max-width: 311px) 100vw, 311px\" \/><\/p>\n<p><strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"311\" height=\"43\" class=\"wp-image-19482\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_373-5.png\" alt=\"IMG_373\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_373-5.png 311w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_373-5-300x41.png 300w\" sizes=\"(max-width: 311px) 100vw, 311px\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"314\" height=\"43\" class=\"wp-image-19483\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_374-5.png\" alt=\"IMG_374\" srcset=\"https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_374-5.png 314w, https:\/\/www.vietlearn.org\/kien-thuc\/wp-content\/uploads\/2021\/12\/img_374-5-300x41.png 300w\" sizes=\"(max-width: 314px) 100vw, 314px\" \/><\/p>\n<p><strong>C\u00e2u 8.<\/strong> Cho t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"169\" height=\"40\" class=\"wp-image-19484\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_375-5.png\" alt=\"IMG_375\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"85\" height=\"33\" class=\"wp-image-19485\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_376-5.png\" alt=\"IMG_376\" \/> H\u1ecfi t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"28\" height=\"22\" class=\"wp-image-19486\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_377-3.png\" alt=\"IMG_377\" \/> c\u00f3 bao nhi\u00eau ph\u1ea7n t\u1eed ?<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19487\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_378-2.png\" alt=\"IMG_378\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-19488\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_379-2.png\" alt=\"IMG_379\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19489\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_380-2.png\" alt=\"IMG_380\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19490\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_381-2.png\" alt=\"IMG_381\" \/><\/p>\n<p><strong>\u0110\u00e1p \u00e1n: 1D, 2C, 3C, 4C, 5A, 6C, 7B, 8C.<\/strong><\/p>\n<p><strong>Ch\u1ee7 \u0111\u1ec1 3. T\u1eacP CON<\/strong><\/p>\n<p><strong>A \u2013 V\u00cd D\u1ee4<\/strong>:<\/p>\n<p><strong>Vd1<\/strong>: Cho <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19491\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_382-2.png\" alt=\"IMG_382\" \/> = {1; 3; 5}. Li\u1ec7t k\u00ea c\u00e1c t\u1eadp con c\u1ee7a t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19492\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_383-2.png\" alt=\"IMG_383\" \/><\/p>\n<p>L\u1eddi gi\u1ea3i<\/p>\n<p>C\u00e1c t\u1eadp con c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19493\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_384-2.png\" alt=\"IMG_384\" \/> bao g\u1ed3m: {1}, {3}, {5}, {1; 3}, {1; 5}, {3; 5}, {1; 3; 5}, <img loading=\"lazy\" decoding=\"async\" width=\"22\" height=\"24\" class=\"wp-image-19494\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_385-2.png\" alt=\"IMG_385\" \/><\/p>\n<p><strong>Vd2: <\/strong>H\u00ecnh n\u00e0o sau \u0111\u00e2y minh h\u1ecda t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19495\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_386-2.png\" alt=\"IMG_386\" \/> l\u00e0 con c\u1ee7a t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"22\" class=\"wp-image-19496\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_387-2.png\" alt=\"IMG_387\" \/> ?<\/p>\n<p><strong> A. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"143\" height=\"90\" class=\"wp-image-19497\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_388.jpeg\" alt=\"IMG_388\" \/><strong> B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"92\" class=\"wp-image-19498\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_389.jpeg\" alt=\"IMG_389\" \/><\/p>\n<p><strong> C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"123\" height=\"92\" class=\"wp-image-19499\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_390.jpeg\" alt=\"IMG_390\" \/><strong> D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"123\" height=\"80\" class=\"wp-image-19500\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_391.jpeg\" alt=\"IMG_391\" \/><\/p>\n<p>L\u1eddi gi\u1ea3i<\/p>\n<p><strong>Ch\u1ecdn C. <\/strong><\/p>\n<p><strong>Vd3: <\/strong>Cho t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"125\" height=\"33\" class=\"wp-image-19501\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_392-2.png\" alt=\"IMG_392\" \/> H\u1ecfi t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-19502\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_393-2.png\" alt=\"IMG_393\" \/> c\u00f3 bao nhi\u00eau t\u1eadp h\u1ee3p con?<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"29\" height=\"24\" class=\"wp-image-19503\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_394-2.png\" alt=\"IMG_394\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19504\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_395-2.png\" alt=\"IMG_395\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19505\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_396-2.png\" alt=\"IMG_396\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19506\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_397-2.png\" alt=\"IMG_397\" \/><\/p>\n<p>L\u1eddi gi\u1ea3i<\/p>\n<p><strong>Ch\u1ecdn A.<\/strong> S\u1ed1 t\u1eadp con: 2<sup>4<\/sup> = 16. (S\u1ed1 t\u1eadp con c\u1ee7a t\u1eadp c\u00f3 n ph\u1ea7n t\u1eed l\u00e0 2<sup>n <\/sup>)<\/p>\n<p>B \u2013 <strong>B\u00c0I T\u1eacP T\u1ef0 LUY\u1ec6N:<\/strong><\/p>\n<p><strong>C\u00e2u 1. <\/strong>Cho t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"103\" height=\"33\" class=\"wp-image-19507\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_398-2.png\" alt=\"IMG_398\" \/> Kh\u1eb3ng \u0111\u1ecbnh n\u00e0o sau \u0111\u00e2y \u0111\u00fang?<\/p>\n<p><strong>A.<\/strong> S\u1ed1 t\u1eadp con c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-19508\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_399-2.png\" alt=\"IMG_399\" \/> l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"29\" height=\"24\" class=\"wp-image-19509\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_400-2.png\" alt=\"IMG_400\" \/> <strong>B.<\/strong> S\u1ed1 t\u1eadp con c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-19510\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_401-2.png\" alt=\"IMG_401\" \/> c\u00f3 hai ph\u1ea7n t\u1eed l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19511\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_402-2.png\" alt=\"IMG_402\" \/><\/p>\n<p><strong>C.<\/strong> S\u1ed1 t\u1eadp con c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-19512\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_403-2.png\" alt=\"IMG_403\" \/> ch\u1ee9a s\u1ed1 1 l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19513\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_404-2.png\" alt=\"IMG_404\" \/> <strong>D.<\/strong> S\u1ed1 t\u1eadp con c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-19514\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_405-2.png\" alt=\"IMG_405\" \/> ch\u1ee9a 3 ph\u1ea7n t\u1eed l\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19515\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_406-2.png\" alt=\"IMG_406\" \/><\/p>\n<p><strong>C\u00e2u 2. <\/strong>T\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"117\" height=\"33\" class=\"wp-image-19516\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_407-2.png\" alt=\"IMG_407\" \/> c\u00f3 bao nhi\u00eau t\u1eadp h\u1ee3p con c\u00f3 \u0111\u00fang hai ph\u1ea7n t\u1eed?<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19517\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_408-2.png\" alt=\"IMG_408\" \/> <strong>B. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19518\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_409-2.png\" alt=\"IMG_409\" \/> <strong>C. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19519\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_410-2.png\" alt=\"IMG_410\" \/> <strong>D. <\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19520\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_411-2.png\" alt=\"IMG_411\" \/><\/p>\n<p><strong>C\u00e2u 3. <\/strong>Trong c\u00e1c t\u1eadp h\u1ee3p sau, t\u1eadp n\u00e0o c\u00f3 \u0111\u00fang m\u1ed9t t\u1eadp h\u1ee3p con ?<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"25\" height=\"24\" class=\"wp-image-19521\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_412-2.png\" alt=\"IMG_412\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"33\" height=\"33\" class=\"wp-image-19522\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_413-2.png\" alt=\"IMG_413\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"66\" height=\"33\" class=\"wp-image-19523\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_414-2.png\" alt=\"IMG_414\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"50\" height=\"33\" class=\"wp-image-19524\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_415-2.png\" alt=\"IMG_415\" \/><\/p>\n<p><strong>C\u00e2u 4. <\/strong>Trong c\u00e1c t\u1eadp h\u1ee3p sau, t\u1eadp n\u00e0o c\u00f3 \u0111\u00fang hai t\u1eadp h\u1ee3p con ?<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"33\" class=\"wp-image-19525\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_416-2.png\" alt=\"IMG_416\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"39\" height=\"33\" class=\"wp-image-19526\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_417-2.png\" alt=\"IMG_417\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"73\" height=\"33\" class=\"wp-image-19527\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_418-2.png\" alt=\"IMG_418\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"76\" height=\"33\" class=\"wp-image-19528\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_419-2.png\" alt=\"IMG_419\" \/><\/p>\n<p><strong>C\u00e2u 5. <\/strong>Cho hai t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"96\" height=\"33\" class=\"wp-image-19529\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_420-2.png\" alt=\"IMG_420\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"134\" height=\"33\" class=\"wp-image-19530\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_421-2.png\" alt=\"IMG_421\" \/> C\u00f3 t\u1ea5t c\u1ea3 bao nhi\u00eau t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-19531\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_422-2.png\" alt=\"IMG_422\" \/> th\u1ecfa <img loading=\"lazy\" decoding=\"async\" width=\"107\" height=\"24\" class=\"wp-image-19532\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_423-2.png\" alt=\"IMG_423\" \/><\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19533\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_424-2.png\" alt=\"IMG_424\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19534\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_425-2.png\" alt=\"IMG_425\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19535\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_426-2.png\" alt=\"IMG_426\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19536\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_427-2.png\" alt=\"IMG_427\" \/><\/p>\n<p><strong>C\u00e2u 6. <\/strong>Cho hai t\u1eadp h\u1ee3p <img loading=\"lazy\" decoding=\"async\" width=\"113\" height=\"33\" class=\"wp-image-19537\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_428-2.png\" alt=\"IMG_428\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"100\" height=\"33\" class=\"wp-image-19538\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_429-2.png\" alt=\"IMG_429\" \/> C\u00f3 t\u1ea5t c\u1ea3 bao nhi\u00eau t\u1eadp <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"22\" class=\"wp-image-19539\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_430-2.png\" alt=\"IMG_430\" \/> th\u1ecfa <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"22\" class=\"wp-image-19540\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_431-2.png\" alt=\"IMG_431\" \/> v\u00e0 <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"24\" class=\"wp-image-19541\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_432-2.png\" alt=\"IMG_432\" \/><\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"19\" height=\"24\" class=\"wp-image-19542\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_433-2.png\" alt=\"IMG_433\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19543\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_434-2.png\" alt=\"IMG_434\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19544\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_435-2.png\" alt=\"IMG_435\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"21\" height=\"24\" class=\"wp-image-19545\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_436-2.png\" alt=\"IMG_436\" \/><\/p>\n<p><strong>C\u00e2u 7. <\/strong>Cho c\u00e1c t\u1eadp h\u1ee3p sau:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"116\" height=\"37\" class=\"wp-image-19546\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_437-2.png\" alt=\"IMG_437\" \/> l\u00e0 b\u1ed9i s\u1ed1 c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"33\" class=\"wp-image-19547\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_438-2.png\" alt=\"IMG_438\" \/> . <img loading=\"lazy\" decoding=\"async\" width=\"113\" height=\"37\" class=\"wp-image-19548\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_439-2.png\" alt=\"IMG_439\" \/> l\u00e0 b\u1ed9i s\u1ed1 c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"33\" class=\"wp-image-19549\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_440-2.png\" alt=\"IMG_440\" \/> .<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" width=\"109\" height=\"37\" class=\"wp-image-19550\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_441-2.png\" alt=\"IMG_441\" \/> l\u00e0 \u01b0\u1edbc s\u1ed1 c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"33\" class=\"wp-image-19551\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_442-2.png\" alt=\"IMG_442\" \/> . <img loading=\"lazy\" decoding=\"async\" width=\"109\" height=\"37\" class=\"wp-image-19552\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_443-2.png\" alt=\"IMG_443\" \/> l\u00e0 \u01b0\u1edbc s\u1ed1 c\u1ee7a <img loading=\"lazy\" decoding=\"async\" width=\"24\" height=\"33\" class=\"wp-image-19553\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_444-2.png\" alt=\"IMG_444\" \/> .<\/p>\n<p>M\u1ec7nh \u0111\u1ec1 n\u00e0o sau \u0111\u00e2y \u0111\u00fang?<\/p>\n<p><strong>A.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"24\" class=\"wp-image-19554\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_445-2.png\" alt=\"IMG_445\" \/> <strong>B.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"71\" height=\"24\" class=\"wp-image-19555\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_446-2.png\" alt=\"IMG_446\" \/> <strong>C.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"57\" height=\"28\" class=\"wp-image-19556\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_447-2.png\" alt=\"IMG_447\" \/> <strong>D.<\/strong> <img loading=\"lazy\" decoding=\"async\" width=\"60\" height=\"28\" class=\"wp-image-19557\" src=\"https:\/\/www.vietlearn.org\/post\/wp-content\/uploads\/2021\/12\/img_448-2.png\" alt=\"IMG_448\" \/><\/p>\n<p><strong>\u0110\u00e1p \u00e1n: 1B, 2B, 3A, 4B, 5A, 6D, 7B. <\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>I \u2013 L\u00dd THUY\u1ebeT: 1. T\u1eadp h\u1ee3p: (c\u00f2n g\u1ecdi l\u00e0 t\u1eadp) l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n c\u1ee7a To\u00e1n h\u1ecdc, kh\u00f4ng \u0111\u1ecbnh ngh\u0129a. &#8211; Th\u01b0\u1eddng k\u00ed hi\u1ec7u: , , \u2026 *. \u0110\u1ec3 ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p ta vi\u1ebft (\u0111\u1ecdc l\u00e0 thu\u1ed9c ). **. \u0110\u1ec3 ch\u1ec9 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t ph\u1ea7n t\u1eed [&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":[41],"tags":[],"class_list":["post-19364","post","type-post","status-publish","format-standard","hentry","category-toan-lop-10"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/19364","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=19364"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/19364\/revisions"}],"predecessor-version":[{"id":19558,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/19364\/revisions\/19558"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=19364"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=19364"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=19364"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}