Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Ca\u0301c phe\u0301p toa\u0301n c\u00f4\u0323ng s\u00f4\u0301 t\u01b0\u0323 nhi\u00ean \u0111a\u0303 qua\u0301 quen thu\u00f4\u0323c va\u0300 d\u00ea\u0303 da\u0300ng gia\u0309i quy\u00ea\u0301t v\u01a1\u0301i ca\u0301c ba\u0323n ho\u0323c sinh. Ngoa\u0300i ca\u0301c phe\u0301p c\u00f4\u0323ng v\u01a1\u0301i s\u00f4\u0301 t\u01b0\u0323 nhi\u00ean, ki\u00ea\u0301n th\u01b0\u0301c Toa\u0301n 6 y\u00eau c\u00e2\u0300u ca\u0301c ba\u0323n ho\u0323c sinh th\u01b0\u0323c hi\u00ea\u0323n phe\u0301p c\u00f4\u0323ng s\u00f4\u0301 nguy\u00ean cu\u0300ng d\u00e2\u0301u. Cu\u0300ng Vietlearn ti\u0300m hi\u00ea\u0309u v\u00ea\u0300 c\u00f4\u0323ng 2 s\u00f4\u0301 nguy\u00ean cu\u0300ng d\u00e2\u0301u trong ba\u0300i vi\u00ea\u0301t sau.<\/p>\n\n\n\n
C\u00f4\u0323ng hai s\u00f4\u0301 nguy\u00ean d\u01b0\u01a1ng<\/p>\n\n\n\n
C\u00f4\u0323ng 2 s\u00f4\u0301 nguy\u00ean d\u01b0\u01a1ng<\/p>\n\n\n\n
C\u00f4\u0323ng hai s\u00f4\u0301 nguy\u00ean \u00e2m<\/p>\n\n\n\n
Vi\u0301 du\u0323: Nhi\u1ec7t \u0111\u1ed9 \u1edf Texas v\u00e0o bu\u1ed5i sa\u0301ng l\u00e0 \u2013 2 \u0111\u00f4\u0323 C. \u0110\u00ea\u0301n chi\u00ea\u0300u, nhi\u00ea\u0323t \u0111\u00f4\u0323 \u01a1\u0309 Texas gia\u0309m th\u00eam 5 \u0111\u00f4\u0323 C. H\u1ecfi nhi\u1ec7t \u0111\u1ed9 bu\u1ed5i chi\u1ec1u l\u00e0 bao nhi\u00eau \u0111\u00f4\u0323 C?<\/p>\n\n\n\n
Minh ho\u0323a va\u0300 ly\u0301 gia\u0309i c\u00f4\u0323ng hai s\u00f4\u0301 nguy\u00ean \u00e2m<\/p>\n\n\n\n
Nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m 5 \u0111\u00f4\u0323 C ngh\u0129a l\u00e0 t\u0103ng (- 5 \u0111\u00f4\u0323 C)<\/p>\n\n\n\n
=> \u0110\u00ea\u0309 ti\u0301nh nhi\u00ea\u0323t \u0111\u00f4\u0323 bu\u00f4\u0309i chi\u00ea\u0300u, ta c\u1ea7n t\u00ednh : (- 2) + (- 5)<\/p>\n\n\n\n
Qua vi\u0301 du\u0323 tr\u00ean ta co\u0301 quy t\u0103\u0301c:<\/p>\n\n\n\n
Mu\u1ed1n c\u1ed9ng hai s\u1ed1 nguy\u00ean \u00e2m, ta c\u1ed9ng hai gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00fang r\u00f4\u0300i \u0111\u1eb7t d\u1ea5u \u2018 \u2013 \u2019 tr\u01b0\u1edbc k\u1ebft qu\u1ea3.<\/p>\n\n\n\n
T\u1ea3i b\u1ed9 t\u00e0i li\u1ec7u v\u00e0 \u0111\u1ec1 thi Full m\u00f4n h\u1ecdc tuy\u1ec7t hay (c\u00f3 l\u1eddi gi\u1ea3i chi ti\u1ebft)<\/p><\/blockquote>\n\n\n\n
Ba\u0300i t\u00e2\u0323p v\u00e2\u0323n du\u0323ng:<\/p>\n\n\n\n
B\u00e0i 1 : T\u00ednh<\/p>\n\n\n\n
a, 2763 + 152<\/p>\n\n\n\n
b, (- 7) + (- 34)<\/p>\n\n\n\n
c, (- 13) + (- 12)<\/p>\n\n\n\n
B\u00e0i 2: T\u00ednh t\u1ed5ng s\u1ed1 nguy\u00ean \u00e2m nh\u1ecf nh\u1ea5t c\u00f3 4 ch\u1eef s\u1ed1 v\u00e0 s\u1ed1 nguy\u00ean \u00e2m l\u1edbn nh\u1ea5t c\u00f3 5<\/p>\n\n\n\n
ch\u1eef s\u1ed1<\/p>\n\n\n\n
B\u00e0i 3 : T\u00ecm c\u00e1c c\u1eb7p s\u1ed1 x, y th\u1ecfa m\u00e3n |x| + |y| = 5<\/p>\n\n\n\n
L\u01a1\u0300i gia\u0309i<\/p>\n\n\n\n
L\u01a1\u0300i gia\u0309i ba\u0300i 1,2<\/p>\n\n\n\n
L\u01a1\u0300i gia\u0309i ba\u0300i 3<\/p>\n\n\n\n
Vietlearn hy vo\u0323ng v\u01a1\u0301i ba\u0300i vi\u00ea\u0301t na\u0300y ca\u0301c ba\u0323n ho\u0323c sinh se\u0303 kh\u00f4ng co\u0300n ca\u0309m th\u00e2\u0301y kho\u0301 kh\u0103n khi th\u01b0\u0323c hi\u00ea\u0323n phe\u0301p c\u00f4\u0323ng ca\u0301c s\u00f4\u0301 nguy\u00ean. Ha\u0303y ti\u00ea\u0301p tu\u0323c kha\u0301m pha\u0301 ca\u0301c ki\u00ea\u0301n th\u01b0\u0301c Toa\u0301n ho\u0323c ta\u0323i blog Vietlearn ngay th\u00f4i na\u0300o. R\u00e2\u0301t nhi\u00ea\u0300u ki\u00ea\u0301n th\u01b0\u0301c h\u00e2\u0301p d\u00e2\u0303n, thu\u0301 vi\u0323 \u0111ang ch\u01a1\u0300 \u0111o\u0301n ca\u0301c ba\u0323n chinh phu\u0323c.<\/p>\n\n\n\n
Xem ngay: Ho\u0323c Toa\u0301n cu\u0300ng Vietlearn: Th\u01b0\u0301 t\u01b0\u0323 t\u00e2\u0323p h\u01a1\u0323p ca\u0301c s\u00f4\u0301 nguy\u00ean<\/p>\n\n\n\n
Nh\u01b0\u0303ng l\u01b0u y\u0301 \u0111\u00ea\u0309 m\u00f4n Toa\u0301n kh\u00f4ng co\u0300n la\u0300 kho\u0301 kh\u0103n<\/p>\n\n\n\n
M\u00f4n Toa\u0301n d\u01b0\u01a1\u0300ng nh\u01b0 la\u0300 n\u00f4\u0303i a\u0301m a\u0309nh cu\u0309a r\u00e2\u0301t nhi\u00ea\u0300u th\u00ea\u0301 h\u00ea\u0323 ho\u0323c sinh. V\u01a1\u0301i ca\u0301c ki\u00ea\u0301n th\u01b0\u0301c ph\u01b0\u0301c ta\u0323p, \u0111o\u0300i ho\u0309i t\u01b0 duy s\u00e2u. Toa\u0301n \u0111\u01b0\u01a1\u0323c nhi\u00ea\u0300u ba\u0323n ho\u0323c sinh coi la\u0300 ke\u0309 thu\u0300, kh\u00f4ng thi\u0301ch m\u00f4n ho\u0323c na\u0300y. M\u00f4n Toa\u0301n co\u0301 th\u01b0\u0323c s\u01b0\u0323 kho\u0301 kh\u0103n nh\u01b0 ca\u0301c ba\u0323n nghi\u0303?<\/p>\n\n\n\n
M\u00f4n Toa\u0301n se\u0303 d\u00ea\u0303 da\u0300ng h\u01a1n bao gi\u01a1\u0300 h\u00ea\u0301t, n\u00ea\u0301u ba\u0323n n\u0103\u0301m ch\u0103\u0301c nh\u01b0\u0303ng me\u0323o sau:<\/p>\n\n\n\n
Ho\u0323c t\u01b0\u0300 c\u01a1 ba\u0309n \u0111\u00ea\u0301n n\u00e2ng cao. X\u00e2y d\u01b0\u0323ng cho ba\u0309n th\u00e2n n\u00ea\u0300n mo\u0301ng ki\u00ea\u0301n th\u01b0\u0301c v\u01b0\u0303ng ch\u0103\u0301c.<\/p>\n\n\n\n
Ch\u0103m chi\u0309 luy\u00ea\u0323n t\u00e2\u0323p. Ho\u0323c t\u00e2\u0323p co\u0301 k\u00ea\u0301 hoa\u0323ch. Chu\u0301ng ta kh\u00f4ng th\u00ea\u0309 gio\u0309i hay tha\u0300nh tha\u0323o b\u00e2\u0301t c\u01b0\u0301 \u0111i\u00ea\u0300u gi\u0300 trong nga\u0300y m\u00f4\u0323t, nga\u0300y hai. Vi\u0300 v\u00e2\u0323y, ba\u0323n c\u00e2\u0300n ki\u00ean tri\u0300 luy\u00ea\u0323n t\u00e2\u0323p. Ho\u0323c va\u0300 la\u0300m ki\u00ean tri\u0300 trong th\u01a1\u0300i gian da\u0300i se\u0303 giu\u0301p ba\u0323n n\u00e2ng cao tri\u0300nh \u0111\u00f4\u0323 cu\u0309a mi\u0300nh ch\u0103\u0301c ch\u0103\u0301n.<\/p>\n\n\n\n
Ho\u0323c nho\u0301m. Ho\u0323c cu\u0300ng ba\u0323n be\u0300 cu\u0303ng la\u0300 m\u00f4\u0323t ph\u01b0\u01a1ng pha\u0301p ho\u0323c \u0111a\u0301ng \u0111\u00ea\u0309 xem xe\u0301t. \u0110\u00e2y la\u0300 hoa\u0323t \u0111\u00f4\u0323ng giu\u0301p g\u0103\u0301n k\u00ea\u0301t ti\u0300nh ba\u0323n. Vi\u00ea\u0323c ho\u0323c cu\u0303ng tr\u01a1\u0309 n\u00ean vui h\u01a1n, hi\u00ea\u0323u qua\u0309 h\u01a1n.<\/p>\n\n\n\n
Tham gia ca\u0301c l\u01a1\u0301p ho\u0323c b\u00f4\u0309 tr\u01a1\u0323, n\u00e2ng cao,\u2026 la\u0300 ca\u0301ch \u0111\u00ea\u0309 n\u00e2ng cao tri\u0300nh \u0111\u00f4\u0323. Hi\u00ea\u0323n nay co\u0301 r\u00e2\u0301t nhi\u00ea\u0300u l\u01a1\u0301p ho\u0323c \u01a1\u0309 ca\u0301c tri\u0300nh \u0111\u00f4\u0323 kha\u0301c nhau. Tu\u0300y theo n\u0103ng l\u01b0\u0323c a\u0300 nhu c\u00e2\u0300u cu\u0309a ba\u0309n th\u00e2n ba\u0323n ha\u0303y l\u01b0\u0323a cho\u0323n kho\u0301a ho\u0323c phu\u0300 h\u01a1\u0323p.<\/p>\n\n\n\n
Vietlearn \u2013 Giu\u0301p ba\u0323n v\u01b0\u01a1\u0323t qua n\u00f4\u0303i s\u01a1\u0323 m\u00f4n Toa\u0301n<\/p>\n\n\n\n
Kho t\u00e0i li\u1ec7u h\u1ecdc t\u1eadp<\/a> Mi\u1ec5n Ph\u00ed \u2013 Vietlearn<\/p>\n\n\n\n
Vietlearn l\u00e0 c\u00f4ng ty Edtech v\u1ec1 gi\u00e1o d\u1ee5c tr\u1ef1c tuy\u1ebfn. Chu\u0301ng t\u00f4i cung c\u1ea5p ca\u0301c tr\u1ea3i nghi\u1ec7m v\u00e0 b\u1ed3i d\u01b0\u1ee1ng h\u1ecdc t\u1eadp<\/a> c\u00e1 nh\u00e2n cho h\u1ecdc sinh<\/a> theo ch\u01b0\u01a1ng tr\u00ecnh gi\u00e1o d\u1ee5c. Ca\u0301c m\u00f4n ho\u0323c: Toa\u0301n, Ly\u0301, Anh,\u2026 t\u01b0\u0300 l\u01a1\u0301p 1 \u0111\u00ea\u0301n 12 \u0111\u01b0\u01a1\u0323c thi\u00ea\u0301t k\u00ea\u0301 khoa ho\u0323c, \u0111u\u0301ng chu\u00e2\u0309n ki\u00ea\u0301n th\u01b0\u0301c. Ca\u0301c ki\u00ea\u0301n th\u01b0\u0301c \u0111\u01b0\u01a1\u0323c th\u00ea\u0309 hi\u00ea\u0323n tr\u01b0\u0323c quan, sinh \u0111\u00f4\u0323ng. Vi\u00ea\u0323c ho\u0323c se\u0303 kh\u00f4ng co\u0300n la\u0300 n\u00f4\u0303i cha\u0301n ch\u01b0\u01a1\u0300ng cu\u0309a ca\u0301c em ho\u0323c sinh.<\/p>\n\n\n\n
B\u1ed3i d\u01b0\u1ee1ng, truy\u1ec1n c\u1ea3m h\u1ee9ng v\u00e0 truy\u1ec1n l\u1eeda h\u1ecdc t\u1eadp<\/a> cho th\u1ebf h\u1ec7 tr\u1ebb lu\u00f4n l\u00e0 s\u1ee9 m\u1ec7nh c\u1ed1t l\u00f5i kh\u00f4ng thay \u0111\u1ed5i c\u1ee7a Vietlearn. M\u00f4 h\u00ecnh gi\u00e1o d\u1ee5c v\u00e0 \u0111\u1ed9i ng\u0169 gi\u00e1o vi\u00ean<\/a> c\u1ee7a Vietlearn \u0111\u01b0\u1ee3c nhi\u1ec1u t\u1ed5 ch\u1ee9c v\u00e0 c\u01a1 quan b\u00e1o ch\u00ed \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng h\u00e0ng \u0111\u1ea7u Vi\u1ec7t Nam. V\u01a1\u0301i l\u00f4\u0323 tri\u0300nh ho\u0323c \u0111\u01b0\u01a1\u0323c ca\u0301 nh\u00e2n ho\u0301a theo k\u00ea\u0301t qua\u0309 ho\u0323c t\u00e2\u0323p, kha\u0309 n\u0103ng ti\u00ea\u0301p thu,\u2026<\/p>\n\n\n\n
B\u00f4\u0301 me\u0323 co\u0301 th\u00ea\u0309 hoa\u0300n toa\u0300n y\u00ean t\u00e2m v\u00ea\u0300 ch\u00e2\u0301t l\u01b0\u01a1\u0323ng va\u0300 ca\u0301c gia\u0301 tri\u0323 ma\u0300 Vietlearn mang la\u0323i. Vietlearn t\u01b0\u0323 tin la\u0300 ng\u01b0\u01a1\u0300i ba\u0323n \u0111\u00f4\u0300ng ha\u0300nh cu\u0309a ca\u0301c em ho\u0323c sinh va\u0300 phu\u0323 huynh tr\u00ean ch\u0103\u0323ng \u0111\u01b0\u01a1\u0300ng chinh phu\u0323c tri th\u01b0\u0301c.<\/p>\n\n\n\n
<\/p>\n\n\n\n
H\u1ecdc To\u00e1n : L\u00e0m quen v\u1edbi s\u1ed1 nguy\u00ean \u00e2m<\/p>\n\n\n\n
Ho\u0323c Toa\u0301n 7 cu\u0300ng Vietlearn: Ly\u0301 thuy\u00ea\u0301t & Ba\u0300i t\u00e2\u0323p c\u00f4\u0323ng tr\u01b0\u0300 s\u00f4\u0301 h\u01b0\u0303u<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Ca\u0301c phe\u0301p toa\u0301n c\u00f4\u0323ng s\u00f4\u0301 t\u01b0\u0323 nhi\u00ean \u0111a\u0303 qua\u0301 quen thu\u00f4\u0323c va\u0300 d\u00ea\u0303 da\u0300ng gia\u0309i quy\u00ea\u0301t v\u01a1\u0301i ca\u0301c ba\u0323n ho\u0323c sinh. Ngoa\u0300i ca\u0301c phe\u0301p c\u00f4\u0323ng v\u01a1\u0301i s\u00f4\u0301 t\u01b0\u0323 nhi\u00ean, ki\u00ea\u0301n th\u01b0\u0301c Toa\u0301n 6 y\u00eau c\u00e2\u0300u ca\u0301c ba\u0323n ho\u0323c sinh th\u01b0\u0323c hi\u00ea\u0323n phe\u0301p c\u00f4\u0323ng s\u00f4\u0301 nguy\u00ean cu\u0300ng d\u00e2\u0301u. Cu\u0300ng Vietlearn […]<\/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],"tags":[],"class_list":["post-2509","post","type-post","status-publish","format-standard","hentry","category-toan-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2509","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=2509"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2509\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2509"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2509"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}