Question

Shalu Shalu a + b whole square minus A square minus b square

Answer 1

(a+b)^2-a^2-b^2
a^2+b^2+2ab-a^2-b^2
2ab

Answer 2

(a+b)^2 = a^2+b^2+2ab
if a square +b square +2ab-a square -b square then the answer will be 2ab only