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) $136^2+36^2-72.136=136^2-2.36.136+36^2=\left(136-36\right)^2=100^2=10000$

a ) \(\left(3-2\right)\left(9+6+4\right)=\left(3-2\right)\left(3^2+3.2+2^2\right)=3^3-2^3=27-8=19\)

b ) \(64+144+27+108=4^3+3.4^2.3+3.4.3^2+3^3=\left(4+3\right)^3=7^3=343\)

\(A=48\left(7^2+1\right)\left(7^4+1\right)...\left(7^{64}+1\right)\)

\(=\left(7^2-1\right)\left(7^2+1\right)\left(7^4+1\right)...\left(7^{64}+1\right)\)

\(=\left(7^4-1\right)\left(7^4+1\right)...\left(7^{64}+1\right)\)

\(=\left(7^8-1\right)\left(7^8+1\right)...\left(7^{64}+1\right)\)

\(...\)

\(=\left(7^{64}-1\right)\left(7^{64}+1\right)\)

\(=7^{128}-1\)

\(48^2-42^2+64-52^2\)

\(=\left(48^2-52^2\right)-\left(42^2-64\right)\)

\(=\left(48^2-52^2\right)-\left(42^2-8^2\right)\)

\(=\left(48-52\right)\left(48+52\right)-\left(42+8\right)\left(42-8\right)\)

\(=-4\cdot100-50\cdot34\)

\(=-8\cdot50-50\cdot34\)

\(=-50\cdot\left(8+34\right)\)

\(=-50\cdot42\)

\(=-2100\)

câu rút gọn = 7

câu tính nhanh mik chịu thông cảm nha

giải ra luôn đi bạn

(60-4)(60+4)

=60²-4²

56. 64 = ( 60 - 4 )( 6 0 + 4 ) = 60^2 - 4^2

= 3600 - 14

= 3584

3584 AI CÓ LÒNG TỐT CHO LIK-E

Lời giải:
$A=64^2-54^2=(64-54)(64+54)=10.118=1180$

$B=76^2+2.76.23+23^2=(76+23)^2=99^2=(100-1)^2=100^2-2.100+1$

$=10000-200+1=9801$

$C=88^2+62^2-38^2-12^2=(88^2-38^2)+(62^2-12^2)$

$=(88-38)(88+38)+(62-12)(62+12)$

$=50.126+50.74=50(126+74)=50.200=10000$