Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(36^2+26^2-52\cdot36\)
= \(36^2-2\cdot36\cdot26+26^2\)
= \(\left(36-26\right)^2\)
= \(10^2\)=\(100\)
a) \(56^2+44^2+2.56.44=56^2+2.56.44+44^2=\left(56+44\right)^2=100^2=10000\)
b) \(36^2+64^2+72.64=36^2+2.36.64+64^2=\left(36+64\right)^2=100^2=10000\)
c) \(136^2+36^2-72.136=136^2-2.36.136+36^2=\left(136-36\right)^2=100^2=10000\)
a) $56^2+44^2+2.56.44=56^2+2.56.44+44^2=\left(56+44\right)^2=100^2=10000$562+442+2.56.44=562+2.56.44+442=(56+44)2=1002=10000
b) $36^2+64^2+72.64=36^2+2.36.64+64^2=\left(36+64\right)^2=100^2=10000$362+642+72.64=362+2.36.64+642=(36+64)2=1002=10000
c) $136^2+36^2-72.136=136^2-2.36.136+36^2=\left(136-36\right)^2=100^2=10000$
\(=82^2-2.18.82+18^2=\left(82-18\right)^2=64^2=...\)
Để xem, \(64^2=2^{12}=4096\)
\(36-\left(x+y\right)^2=\left(6-x-y\right)\left(6+x+y\right)\)
\(118^2-118.36+18^2\)
\(=118^2-2.118.18+18^2\)
\(=\left(118-18\right)^2\)
\(=100^2=10000\)
\(118^2-118.36+18^2\)
=\(118^2-2.118.18+18^2\)
=\(\left(118-18\right)^2\)
=\(100^2\)
Bài 4:
\(x^3-2x^2+x=x\left(x-1\right)^2\)
\(5\left(x-y\right)-y\left(x-y\right)=\left(x-y\right)\left(5-y\right)\)
\(x^2-12x+36=\left(x-6\right)^2\)
20062-36
=20062-62
=(2006+6).(2006-6)
=2012.2000
=4024000
\(36^2+24^2+36.48\)
\(=36^2+2.36.24+24^2\)
\(=\left(36+24\right)^2=60^2=3600\)