Question

Verify (x + y)2 = (x - y)2 + 4xy for x = 2 , y = 4.​

Answer 1

$\large{ \textsf{\textbf {\pink {➽ \: \: Answer \: :-}}}}$

=(3^2-4 (3)(2)+2^2)(3-2(2))

=(9-24+4)(3-4)

=(-11)(-1)

=11