Question

To verify (a+b)2=a2+2ab+b2

Answer 1

Let's solve L.H.S

(a+b)^2
=(a+b)(a+b)
=a (a+b)+b (a+b)
=a^2+ab+ab+b^2
=a^2+2ab+b^2
L.H.S=R.H.S
Hope it helps you

Answer 2

LHS
$(a + b) ^{2} \\ (a + b) (a + b) \\ {a }^{2} + ab + ab + {b}^{2} \\ {a}^{2} + 2ab + {b}^{2}$
LHS= RHS
Hence proved