Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
L\u0169y th\u1eeba v\u1edbi s\u1ed1 m\u0169 t\u1ef1 nhi\u00ean v\u00e0 nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 l\u00e0 m\u1ed9t trong nh\u1eefng b\u00e0i h\u1ecdc quan tr\u1ecdng b\u1eadc nh\u1ea5t \u1edf s\u1ed1 h\u1ecdc l\u1edbp 6. \u0110\u00f3 l\u00e0 m\u1ed9t ki\u1ebfn th\u1ee9c kh\u00f3 n\u1eafm b\u1eaft. H\u00e3y \u0111i t\u00ecm l\u1eddi gi\u1ea3i cho nh\u1eefng b\u00e0i to\u00e1n kh\u00f3 n\u00e0y.<\/p>\n\n\n\n
Ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft<\/p>\n\n\n\n
L\u0169y th\u1eeba v\u1edbi s\u1ed1 m\u0169 t\u1ef1 nhi\u00ean<\/p>\n\n\n\n
L\u0169y th\u1eeba b\u1eadc n c\u1ee7a a l\u00e0 l\u00e0 t\u00edch c\u1ee7a n th\u1eeba s\u1ed1 b\u1eb1ng nhau. M\u1ed7i th\u1eeba s\u1ed1 b\u1eb1ng a.<\/p>\n\n\n\n
an = a.a.a. \u2026 .a (n th\u1eeba s\u1ed1 a) (n\u22600)<\/p>\n\n\n\n
Trong \u0111\u00f3:<\/p>\n\n\n\n
a l\u00e0 c\u01a1 s\u1ed1<\/p>\n\n\n\n
n l\u00e0 s\u1ed1 m\u0169<\/p>\n\n\n\n
L\u0169y th\u1eeba v\u1edbi s\u1ed1 m\u0169 t\u1ef1 nhi\u00ean<\/p>\n\n\n\n
Nh\u00e2n \u2013 chia hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1<\/p>\n\n\n\n
Khi nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1, ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 c\u1ed9ng c\u00e1c s\u1ed1 m\u0169.<\/p>\n\n\n\n
am. an = am+n<\/p>\n\n\n\n
Khi chia hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 kh\u00e1c kh\u00f4ng, ta gi\u1eef nguy\u00ean c\u01a1 s\u1ed1 v\u00e0 tr\u1eeb c\u00e1c s\u1ed1 m\u0169 cho nhau.<\/p>\n\n\n\n
am: an = am-n (a\u22600; m\u22600)<\/p>\n\n\n\n
Ph\u00e9p nh\u00e2n nhi\u1ec1u l\u0169y th\u1eeba b\u1eb1ng nhau g\u1ecdi l\u00e0 ph\u00e9p n\u00e2ng l\u00ean l\u0169y th\u1eeba.<\/p>\n\n\n\n
Nh\u00e2n \u2013 chia hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1<\/p>\n\n\n\n
M\u1ed9t s\u1ed1 ch\u00fa \u00fd v\u1ec1 l\u0169y th\u1eeba v\u1edbi s\u1ed1 m\u0169 t\u1ef1 nhi\u00ean v\u00e0 nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1<\/p>\n\n\n\n
a2 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 a b\u00ecnh ph\u01b0\u01a1ng hay b\u00ecnh ph\u01b0\u01a1ng c\u1ee7a a<\/p>\n\n\n\n
a3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 a l\u1eadp ph\u01b0\u01a1ng hay c\u00f2n goi l\u00e0 l\u1eadp ph\u01b0\u01a1ng c\u1ee7a a<\/p>\n\n\n\n
a1 = a<\/p>\n\n\n\n
H\u01b0\u1edbng d\u1eabn gi\u1ea3i b\u00e0i t\u1eadp s\u00e1ch gi\u00e1o khoa<\/p>\n\n\n\n
B\u00e0i 56, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 56, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 57, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 57, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 58, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 58, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 59, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 59, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 60, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 60, trang 27. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
Nh\u1eefng \u0111i\u1ec1u nh\u1ecf Vietlearn nh\u1eafn ba m\u1eb9<\/p>\n\n\n\n
\u0110\u1ec3 con chinh ph\u1ee5c \u0111\u01b0\u1ee3c ki\u1ebfn th\u1ee9c l\u1edbp 6<\/a> m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, ba m\u1eb9 n\u00ean ch\u00fa \u00fd, quan t\u00e2m t\u1edbi s\u1ef1 thay \u0111\u1ed5i trong t\u00e2m l\u00fd v\u00e0 ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc c\u1ee7a con. Vi\u1ec7c d\u1ea1y con<\/a> h\u1ecdc \u0111\u1ec3 con t\u1ef1 tin h\u1ecdc l\u1edbp 6 n\u00ean \u0111\u01b0\u1ee3c ph\u1ee5 huynh ti\u1ebfn h\u00e0nh th\u01b0\u1eddng xuy\u00ean t\u1eeb nh\u1eefng \u0111i\u1ec1u nh\u1ecf nh\u1ea5t. Nh\u01b0 luy\u1ec7n ch\u1eef hay luy\u1ec7n l\u1ea1i c\u00e1c ph\u00e9p t\u00ednh nh\u1ea9m,\u2026<\/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 Ba m\u1eb9 n\u00ean nh\u1eafc nh\u1edf con h\u1ecdc v\u00e0 \u00f4n b\u00e0i cho k\u1ecbp ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc. V\u00ec v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng ki\u1ebfn th\u1ee9c l\u1edbn, n\u1ebfu con b\u1ecf b\u00ea d\u00f9 ch\u1ec9 1 ng\u00e0y, con r\u1ea5t c\u00f3 th\u1ec3 s\u1ebd b\u1ecb ch\u1eadm l\u1ea1i so v\u1edbi b\u1ea1n b\u00e8 c\u00f9ng l\u1edbp. C\u00f3 nh\u1eefng b\u00e0i t\u1eadp kh\u00f3, con s\u1ebd c\u1ea7n \u0111\u1ebfn s\u1ef1 gi\u1ea3i th\u00edch, gi\u00fap \u0111\u1ee1 c\u1ee7a ph\u1ee5 huynh. Trong kho\u1ea3ng th\u1eddi gian c\u00f9ng con h\u1ecdc t\u1eadp<\/a>, \u00f4n luy\u1ec7n, ba m\u1eb9 n\u00ean \u0111\u1ed9ng vi\u00ean con h\u0103ng h\u00e1i ph\u00e1t bi\u1ec3u \u00fd ki\u1ebfn \u1edf l\u1edbp. V\u00e0 m\u1ea1nh d\u1ea1n gi\u01a1 tay h\u1ecfi th\u00eam v\u1ec1 nh\u1eefng v\u1ea5n \u0111\u1ec1 con ch\u01b0a th\u1ef1c s\u1ef1 hi\u1ec3u r\u00f5. \u0110\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 c\u00e1c nguy\u00ean t\u1eafc khi d\u1ea1y con<\/a> h\u1ecdc l\u1edbp 6, Vietlearn g\u1eedi ba m\u1eb9 m\u1ed9t s\u1ed1 b\u00ed quy\u1ebft \u0111\u1ec3 con h\u1ecdc t\u1ed1t l\u1edbp 6<\/p>\n\n\n\n L\u1eddi k\u1ebft:<\/p>\n\n\n\n \u0110\u1ed1i v\u1edbi nh\u1eefng b\u00e0i h\u1ecdc \u0111\u1ea7u ti\u00ean trong ch\u01b0\u01a1ng tr\u00ecnh h\u1ecdc l\u1edbp 6. Qua ph\u1ea7n tr\u00ecnh b\u00e0y l\u00fd thuy\u1ebft v\u00e0 g\u1ee3i \u00fd l\u1eddi gi\u1ea3i c\u1ee7a m\u00ecnh, Vietlearn mong r\u1eb1ng c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 ba m\u1eb9 c\u0169ng nh\u01b0 c\u00e1c con trong qu\u00e1 tr\u00ecnh h\u1ecdc t\u1eadp<\/a> v\u00e0 r\u00e8n luy\u1ec7n t\u1ea1i tr\u01b0\u1eddng trung h\u1ecdc c\u01a1 s\u1edf. Ch\u00fac c\u00e1c con \u0111\u1ea1t \u0111\u01b0\u1ee3c nhi\u1ec1u th\u00e0nh t\u00edch v\u00e0 g\u1eb7t h\u00e1i \u0111\u01b0\u1ee3c nhi\u1ec1u ki\u1ebfn th\u1ee9c c\u0169ng nh\u01b0 ph\u00e1t tri\u1ec3n th\u1eadt t\u1ed1t trong m\u1ed9t m\u00f4i tr\u01b0\u1eddng m\u1edbi. N\u1ebfu c\u00f3 \u00fd ki\u1ebfn nh\u1eadn x\u00e9t, h\u00e3y \u0111\u1ec3 l\u1ea1i l\u1eddi nh\u1eafn cho Vietlearn t\u1ea1i m\u1ee5c b\u00ecnh lu\u1eadn nh\u00e9!<\/p>\n\n\n\n <\/p>\n\n\n\n T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean. Vietlearn c\u00f9ng tr\u1ebb t\u00ecm hi\u1ec3u s\u1ed1 h\u1ecdc l\u1edbp 6<\/p>\n\n\n\n C<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":" Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn L\u0169y th\u1eeba v\u1edbi s\u1ed1 m\u0169 t\u1ef1 nhi\u00ean v\u00e0 nh\u00e2n hai l\u0169y th\u1eeba c\u00f9ng c\u01a1 s\u1ed1 l\u00e0 m\u1ed9t trong nh\u1eefng b\u00e0i h\u1ecdc quan tr\u1ecdng b\u1eadc nh\u1ea5t \u1edf s\u1ed1 h\u1ecdc l\u1edbp 6. \u0110\u00f3 l\u00e0 m\u1ed9t ki\u1ebfn th\u1ee9c kh\u00f3 n\u1eafm b\u1eaft. H\u00e3y \u0111i t\u00ecm l\u1eddi gi\u1ea3i cho nh\u1eefng b\u00e0i to\u00e1n kh\u00f3 n\u00e0y. […]<\/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":[1],"tags":[],"class_list":["post-2581","post","type-post","status-publish","format-standard","hentry","category-general"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2581","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=2581"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2581\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2581"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2581"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}