Question

[a+b]^2 reply this equation fast​

Answer 1

(a + b)²

(a+b)(a+b)

a(a+b) + b(a+b)

a² + ab + ab + b²

a² + 2ab + b²

Answer 2

a^2 + b^2 + 2ab

Verification:

(a+b)^2

= (a + b) (a + b)

= a(a+b) + b(a+b)

= a^2 + ab + ba + b^2

= a^2 + 2ab + b^2 [since, ab = ba]

= a^2 + b^2 + 2ab