Question

(a+2) (a+2) using identities (a²+2ab+b²) ​

Answer 1

Answer:

(a+ 2) (a+2)

a² + 2(a)(2) + b² = a² + 4a + b²

Answer 2

Equation given :

= (a+2)(a+2)

Can also be written as :

= (a+2)² (1)

Solution :

We know that :

(a+b)² = a²+2ab+b² -(2)

On using formulae of equation (2) in (1) :

(a+2)² = a²+2×a×2+2²

(a+2)² = a²+4a+4