Question

a square + b square =​

Answer 1

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

= a^2 + 2ab + b^2 - 2ab

= a^2 + b^2

= LHS = RHS

Therefore, hence proved

Answer 2

$\huge{\boxed{a^2+b^2+2ab=(a+b)^2}}$