Question

a2 + 2ab + b and a2 - 2ab + b2​

Answer 1

Step-by-step explanation:

a²+2ab+b+a²-2ab+b²

=2a²+b²+b

Answer 2

a²+2ab+ b² =

$(x + y) ^{2}$

here (a +b )²

a²- 2ab + b² =

$(x - y) ^{2}$

here (a -b )²

These are two important formulas of Algebra