{"id":1063,"date":"2021-10-08T13:08:52","date_gmt":"2021-10-08T13:08:52","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=1063"},"modified":"2021-10-14T22:11:32","modified_gmt":"2021-10-14T15:11:32","slug":"lien-he-giua-phep-chia-va-phep-khai-phuong-hoc-toan-9","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/lien-he-giua-phep-chia-va-phep-khai-phuong-hoc-toan-9\/","title":{"rendered":"Li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng \u2013 H\u1ecdc to\u00e1n 9"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 c\u00f3 th\u1ec3 l\u00e0m t\u1ed1t c\u00e1c b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn ch\u1ee7 \u0111\u1ec1 li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng, ch\u00fang ta c\u1ea7n ph\u1ea3i n\u1eafm \u0111\u01b0\u1ee3c l\u00fd thuy\u1ebft li\u00ean quan. Trong b\u00e0i vi\u1ebft n\u00e0y, Vietlearn s\u1ebd gi\u00fap c\u00e1c em h\u1ec7 th\u1ed1ng l\u1ea1i c\u00e1c <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n<\/a> nh\u1ea5t \u0111\u01b0\u1ee3c gi\u1edbi thi\u1ec7u trong To\u00e1n 9 li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng. B\u00ean c\u1ea1nh \u0111\u00f3 l\u00e0 c\u00e1c d\u1ea1ng b\u00e0i, quy t\u1eafc gi\u1ea3i gi\u00fap c\u00e1c em l\u00e0m b\u00e0i t\u1eadp t\u1ed1t h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ecm hi\u1ec3u v\u1ec1 li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ecbnh l\u00ed li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi s\u1ed1 a kh\u00f4ng \u00e2m v\u00e0 s\u1ed1 b d\u01b0\u01a1ng ta c\u00f3: \u221a (a \u2013 b) = \u221a a \/ \u221a b<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quy t\u1eafc khai ph\u01b0\u01a1ng m\u1ed9t th\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi ch\u00fang ta mu\u1ed1n khai ph\u01b0\u01a1ng m\u1ed9t th\u01b0\u01a1ng a\/b m\u00e0 trong \u0111\u00f3 a kh\u00f4ng \u00e2m, b d\u01b0\u01a1ng, th\u00ec ta c\u00f3 th\u1ec3 khai ph\u01b0\u01a1ng l\u1ea7n l\u01b0\u1ee3t a v\u00e0 b r\u1ed3i l\u1ea5y k\u1ebft qu\u1ea3 th\u1ee9 nh\u1ea5t chia cho k\u1ebft qu\u1ea3 th\u1ee9 2.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quy t\u1eafc chia c\u00e1c c\u0103n b\u1eadc hai<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi mu\u1ed1n chia c\u00e1c c\u0103n b\u1eadc hai c\u1ee7a s\u1ed1 a kh\u00f4ng \u00e2m cho c\u0103n b\u1eadc hai c\u1ee7a s\u1ed1 b d\u01b0\u01a1ng ta c\u00f3 th\u1ec3 chia a cho cho b r\u1ed3i khai ph\u01b0\u01a1ng k\u1ebft qu\u1ea3 \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00fa \u00fd: M\u1ed9t c\u00e1ch t\u1ed5ng qu\u00e1t, v\u1edbi bi\u1ec3u th\u1ee9c Akh\u00f4ng \u00e2m v\u00e0 bi\u1ec3u th\u1ee9c B d\u01b0\u01a1ng ta c\u00f3 \u221a (A-B) = \u221a A \/ \u221a B<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c d\u1ea1ng b\u00e0i th\u01b0\u1eddng g\u1eb7p v\u1ec1 li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ea1ng 1: Th\u1ef1c hi\u1ec7n ph\u00e9p t\u00ednh<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c khai ph\u01b0\u01a1ng m\u1ed9t t\u00edch v\u00e0 khai ph\u01b0\u01a1ng m\u1ed9t th\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi hai bi\u1ec3u th\u1ee9c A, B kh\u00f4ng \u00e2m ta c\u00f3 \u221a (A.B) = \u221a A .\u221a B<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi bi\u1ec3u th\u1ee9c A kh\u00f4ng \u00e2m v\u00e0 bi\u1ec3u th\u1ee9c B d\u01b0\u01a1ng ta c\u00f3 \u221a (A\/B) = \u221a A \/ \u221a B<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u221a 32 + \u221a 8 = \u221a (16.2) + \u221a (4.2) = \u221a 16 .\u221a 2 + \u221a 4 . \u221a 2 = 4\u221a 2 + 2\u221a 2 = 6 \u221a 2<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ea1ng 2: R\u00fat g\u1ecdn bi\u1ec3u th\u1ee9c \u2013 gi\u1ea3i b\u00e0i t\u1eadp li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u01b0\u01a1ng ph\u00e1p:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2013 \u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c khai ph\u01b0\u01a1ng m\u1ed9t t\u00edch v\u00e0 khai ph\u01b0\u01a1ng m\u1ed9t th\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi hai bi\u1ec3u th\u1ee9c A, B kh\u00f4ng \u00e2m ta c\u00f3 \u221a (A.B) = \u221a A .\u221a B<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi bi\u1ec3u th\u1ee9c A kh\u00f4ng \u00e2m v\u00e0 bi\u1ec3u th\u1ee9c B d\u01b0\u01a1ng ta c\u00f3 \u221a (A\/B) = \u221a A \/ \u221a B<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u2013 \u00c1p d\u1ee5ng h\u1eb1ng \u0111\u1eb3ng th\u1ee9c \u221a (A2) = |A|<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1ea1ng 3: Gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ph\u01b0\u01a1ng ph\u00e1p:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c khai ph\u01b0\u01a1ng m\u1ed9t t\u00edch v\u00e0 khai ph\u01b0\u01a1ng m\u1ed9t th\u01b0\u01a1ng \u0111\u1ec3 \u0111\u01b0a ph\u01b0\u01a1ng tr\u00ecnh \u0111\u00e3 cho v\u1ec1 c\u00e1c d\u1ea1ng quen thu\u1ed9c:<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p> Li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p nh\u00e2n v\u00e0 ph\u00e9o khai ph\u01b0\u01a1ng<\/p><\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng luy\u1ec7n t\u1eadp<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sau \u0111\u00e2y s\u1ebd l\u00e0 c\u00e1ch gi\u1ea3i to\u00e1n 9 li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Gi\u1ea3i Tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi B\u00e0i 4 trang 16 SGK To\u00e1n 9 T\u1eadp 1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh v\u00e0 so s\u00e1nh:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh v\u00e0 so s\u00e1nh: \u221a (16 \u2013 25) v\u00e0 \u221a 16\/\u221a 25<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u1eddi gi\u1ea3i chi ti\u1ebft<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi 2 B\u00e0i 4 trang 17 SGK To\u00e1n 9 T\u1eadp 1:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u221a (225 \u2013 256)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u221a 0.0196<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi 3 B\u00e0i 4 trang 18 SGK To\u00e1n 9 T\u1eadp 1<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00ednh:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u221a (999 \u2013 111)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u221a (52 \u2013 117 )<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u00ed quy\u1ebft h\u1ecdc nhanh nh\u1edb l\u00e2u m\u00f4n To\u00e1n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To\u00e1n l\u00e0 m\u00f4n h\u1ecdc v\u00f4 c\u00f9ng th\u00fa v\u1ecb n\u1ebfu nh\u01b0 c\u00e1c b\u1ea1n bi\u1ebft ph\u01b0\u01a1ng ph\u00e1p c\u0169ng nh\u01b0 b\u00ed quy\u1ebft. N\u1ebfu b\u1ea1n \u0111ang \u0111au \u0111\u1ea7u khi ph\u1ea3i ghi nh\u1edb qu\u00e1 nhi\u1ec1u c\u00f4ng th\u1ee9c, l\u1eabn l\u1ed9n gi\u1eefa c\u00e1c ki\u1ebfn th\u1ee9c v\u1edbi nhau th\u00ec c\u00f9ng Vietlearn chia s\u1ebb nh\u1eefng b\u00ed quy\u1ebft \u0111\u1ec3 h\u1ecdc To\u00e1n n\u00f3i chung v\u00e0 ghi nh\u1edb c\u00f4ng th\u1ee9c li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng n\u00f3i ri\u00eang nh\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u00e0m sao \u0111\u1ec3 c\u00f3 th\u1ec3 ghi nh\u1edb nhanh c\u00e1c c\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u0103m ch\u1ec9 ghi note<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0\u1ee3ng ki\u1ebfn th\u1ee9c h\u1eb1ng ng\u00e0y m\u00e0 ch\u00fang ta c\u1ea7n ph\u1ea3i ghi nh\u1edb l\u00e0 v\u00f4 c\u00f9ng nhi\u1ec1u. Cho d\u00f9 b\u1ea1n c\u00f3 tr\u00ed nh\u1edb t\u1ed1t \u0111\u1ebfn \u0111\u00e2u th\u00ec c\u0169ng kh\u00f4ng th\u1ec3 ngay l\u1eadp t\u1ee9c nh\u1edb h\u1ebft t\u1ea5t c\u1ea3 \u0111\u01b0\u1ee3c. V\u00ec th\u1ebf, h\u00e3y s\u1eafm cho m\u00ecnh m\u1ed9t quy\u1ec3n s\u1ed5 nh\u1ecf v\u00e0 lu\u00f4n mang theo b\u00ean ng\u01b0\u1eddi \u0111\u1ec3 c\u00f3 th\u1ec3 ngay l\u1eadp t\u1ee9c ghi l\u1ea1i nh\u1eefng th\u00f4ng tin h\u1eefu \u00edch.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5 nh\u01b0 khi h\u1ecdc \u0111\u1ebfn b\u00e0i Li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng ch\u00fang ta c\u00f3 th\u1ec3 ghi ngay \u0111\u1ecbnh l\u00ed, quy t\u1eafc \u0111\u1ec3 c\u1ea7n l\u00e0 c\u00f3 th\u1ec3 th\u1ea5y v\u00e0 s\u1eed d\u1ee5ng ngay l\u1eadp t\u1ee9c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ec7 th\u1ed1ng l\u1ea1i th\u00f4ng tin<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u1ec3 ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c kh\u1ed1i l\u01b0\u1ee3ng ki\u1ebfn th\u1ee9c, h\u00e3y h\u1ec7 th\u1ed1ng ch\u00fang m\u1ed9t c\u00e1ch \u0111\u1ea7y \u0111\u1ee7 v\u00e0 ch\u00ednh x\u00e1c nh\u1ea5t. H\u00e3y s\u1eafp x\u1ebfp v\u00e0 ph\u00e2n lo\u1ea1i ch\u00fang theo t\u1eebng ch\u1ee7 \u0111\u1ec1 ho\u1eb7c th\u1ee9 t\u1ef1 b\u00e0i gi\u1ea3ng, c\u00e1c ki\u1ebfn th\u1ee9c v\u00e0 th\u1ea7y c\u00f4 cung c\u1ea5p. Nh\u01b0 v\u1eady ch\u00fang ta s\u1ebd kh\u00f4ng b\u1ecb lo\u1ea1n ki\u1ebfn th\u1ee9c v\u00e0 s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng th\u1ee9c c\u00f3 li\u00ean quan \u0111\u1ebfn nhau m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c v\u00e0 nhanh ch\u00f3ng h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ghi nh\u1edb b\u1eb1ng h\u00ecnh \u1ea3nh<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Thay v\u00ec vi\u1ebft tr\u00e0n lan ch\u1eef v\u00e0 s\u1ed1 ra gi\u1ea5y, b\u1ea1n h\u00e3y s\u1eed d\u1ee5ng h\u00ecnh \u1ea3nh \u0111\u1ec3 ghi nh\u1edb m\u1ed9t c\u00e1ch nhanh ch\u00f3ng h\u01a1n. B\u1edfi th\u00f4ng qua m\u1ed9t h\u00ecnh v\u1ebd, th\u01b0\u1edbc phim hay b\u1ee9c tranh l\u00e0 ch\u00fang ta \u0111\u00e3 c\u00f3 th\u1ec3 ghi nh\u1edb \u0111\u01b0\u1ee3c m\u1ed9t l\u01b0\u1ee3ng ki\u1ebfn th\u1ee9c kh\u1ed5ng l\u1ed3 cho b\u1ea3n th\u00e2n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ecdc c\u00e1ch n\u00f3i v\u00e0 ghi nh\u1edb<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ch\u00fang ta s\u1ebd ch\u1ec9 nh\u1edb \u0111\u01b0\u1ee3c kho\u1ea3ng 20% th\u00f4ng tin khi ch\u00fang ta nghe. Nh\u01b0ng n\u1ebfu ch\u00fang ta l\u00e0 ng\u01b0\u1eddi d\u1ea1y th\u00ec c\u00f3 th\u1ec3 ghi nh\u1edb \u0111\u1ebfn 95% l\u01b0\u1ee3ng th\u00f4ng tin \u0111\u00f3. B\u1ea1n ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 d\u00f9ng c\u00e1ch n\u00e0y \u0111\u1ec3 ghi nh\u1edb th\u00f4ng tin m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng. \u0110\u00e2y c\u0169ng l\u00e0 c\u00e1ch \u0111\u1ec3 ch\u00fang ta r\u00e8n luy\u1ec7n <a href=\"https:\/\/www.vietlearn.org\" data-internallinksmanager029f6b8e52c=\"2\" title=\"Vietlearn\" rel=\"nofollow\">k\u1ef9 n\u0103ng<\/a> n\u00f3i c\u1ee7a b\u1ea3n th\u00e2n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1ebd b\u1ea3n \u0111\u1ed3 t\u01b0 duy<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">B\u1ea3n \u0111\u1ed3 t\u01b0 duy kh\u00f4ng c\u00f2n l\u00e0 ph\u01b0\u01a1ng ph\u00e1p qu\u00e1 m\u1edbi nh\u01b0ng n\u00f3 lu\u00f4n \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u qu\u1ea3 nh\u1ea5t \u0111\u1ecbnh. \u0110\u00e2y l\u00e0 c\u00f4ng c\u1ee5 tr\u1ef1c quan gi\u00fap ghi nh\u1edb th\u00f4ng tin m\u1ed9t c\u00e1ch h\u1eefu hi\u1ec7u. Vi\u1ec7c tr\u00ecnh b\u00e0y b\u1ea3n \u0111\u1ed3 ra sao t\u00f9y thu\u1ed9c v\u00e0o s\u1ef1 s\u00e1ng t\u1ea1o c\u1ee7a m\u1ed7i ng\u01b0\u1eddi. \u0110\u1ed1i v\u1edbi To\u00e1n h\u1ecdc, ch\u00fang ta c\u0169ng ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u1ec3 ghi nh\u1edb l\u00e2u h\u01a1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1eed d\u1ee5ng b\u1ea3n \u0111\u1ed3 t\u01b0 duy \u0111\u1ec3 h\u1ec7 th\u1ed1ng ki\u1ebfn th\u1ee9c \u0111\u1ea7y \u0111\u1ee7 h\u01a1n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u01b0 v\u1eady l\u00e0 ph\u1ea7n l\u00fd thuy\u1ebft li\u00ean quan \u0111\u1ebfn li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng \u0111\u00e3 \u0111\u01b0\u1ee3c Vietlearn h\u1ec7 th\u1ed1ng l\u1ea1i gi\u00fap b\u1ea1n. \u0110\u1ed3ng th\u1eddi ch\u00fang t\u00f4i c\u0169ng \u0111\u01b0a ra b\u00ed quy\u1ebft h\u1ecdc to\u00e1n nhanh v\u00e0 nh\u1edb l\u00e2u \u0111\u1ec3 b\u1ea1n c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng. Mu\u1ed1n t\u00ecm hi\u1ec3u nhi\u1ec1u h\u01a1n c\u00e1c ki\u1ebfn th\u1ee9c v\u1ec1 m\u00f4n h\u1ecdc n\u00e0y, b\u1ea1n c\u00f3 th\u1ec3 truy c\u1eadp v\u00e0o \u0111\u1ecba ch\u1ec9 Vietlearn.org\/.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Bi\u1ebfn \u0111\u1ed5i \u0111\u01a1n gi\u1ea3n bi\u1ec3u th\u1ee9c ch\u1ee9a c\u0103n b\u1eadc hai \u2013 C\u00f9ng Vietlearn chia s\u1ebb<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u0103n b\u1eadc 3 l\u1edbp 9 \u2013 Gi\u1ea3i to\u00e1n 9 nhanh nh\u1ea5t c\u00f9ng<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn \u0110\u1ec3 c\u00f3 th\u1ec3 l\u00e0m t\u1ed1t c\u00e1c b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn ch\u1ee7 \u0111\u1ec1 li\u00ean h\u1ec7 gi\u1eefa ph\u00e9p chia v\u00e0 ph\u00e9p khai ph\u01b0\u01a1ng, ch\u00fang ta c\u1ea7n ph\u1ea3i n\u1eafm \u0111\u01b0\u1ee3c l\u00fd thuy\u1ebft li\u00ean quan. Trong b\u00e0i vi\u1ebft n\u00e0y, Vietlearn s\u1ebd gi\u00fap c\u00e1c em h\u1ec7 th\u1ed1ng l\u1ea1i c\u00e1c ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n [&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":[9,4],"tags":[],"class_list":["post-1063","post","type-post","status-publish","format-standard","hentry","category-toan-hoc","category-trung-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1063","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=1063"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1063\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1063"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1063"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1063"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}