Question

Add a2 + 2ab +b2 , a2 − 2ab +b2, a2 – b2

Answer 1

a² + 2ab + b² + a² - 2ab + b² + a² - b²

3a² + b²

Answer 2

Answer:

As we know from the formula

(x+y)

2

=x

2

+2xy+y

2

similarly we need to add b

2

to get whole square, Hence (a+b)

2

=a

2

+2ab+b

2