Question

Expansion of (a+ b) (a-b) gives _____​

Answer 1

Answer:

(a-b)²

Step-by-step explanation:

this is the identity + and - is = (-) so the answer is (a-b)²

Answer 2

Answer:

(a+ b) (a-b) gives _____

Step-by-step explanation:

(a+ b) (a-b)

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

=a²-ab+ba-b²

=a²-b²

so (a+ b) (a-b) gives _a²-b²