\(56^2+44^2+2.44.56\)
\(=\left(56+44\right)^2\)
\(=100^2=10000\)
562 + 442 + 2.44.56
= (56 + 44)2
= 1002 = 10000
\(56^2+44^2+2.44.56\)
\(=44^2+2.44.56+56^2\)
\(=\left(44+56\right)^2\)
\(=100^2\)
\(=10000\)
( Hằng đẳng thức số 1 : A2 + 2AB + B2 = ( A + B ) 2 )