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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) $136^2+36^2-72.136=136^2-2.36.136+36^2=\left(136-36\right)^2=100^2=10000$
\(A=48\left(7^2+1\right)\left(7^4+1\right)...\left(7^{64}+1\right)\)
\(=\left(7^2-1\right)\left(7^2+1\right)\left(7^4+1\right)...\left(7^{64}+1\right)\)
\(=\left(7^4-1\right)\left(7^4+1\right)...\left(7^{64}+1\right)\)
\(=\left(7^8-1\right)\left(7^8+1\right)...\left(7^{64}+1\right)\)
\(...\)
\(=\left(7^{64}-1\right)\left(7^{64}+1\right)\)
\(=7^{128}-1\)
\(48^2-42^2+64-52^2\)
\(=\left(48^2-52^2\right)-\left(42^2-64\right)\)
\(=\left(48^2-52^2\right)-\left(42^2-8^2\right)\)
\(=\left(48-52\right)\left(48+52\right)-\left(42+8\right)\left(42-8\right)\)
\(=-4\cdot100-50\cdot34\)
\(=-8\cdot50-50\cdot34\)
\(=-50\cdot\left(8+34\right)\)
\(=-50\cdot42\)
\(=-2100\)
56. 64 = ( 60 - 4 )( 6 0 + 4 ) = 60^2 - 4^2
= 3600 - 14
= 3584
8922 + 892.216 + 1082
= 8922 + 2.892.108 + 1082
= (892 + 108)2
= 10002
= 1000000
=108^2+8^2-16(100+8) =(108+8)(108-8)-16.100+16.8 =116.100-16.100+16.8 =100(116-16)+16.8 =100.100+128 =10000+128 =10128