Question

Evaluate : (a+b) ^2 - (a-b) ^2.​

Answer 1

♡ⓈⓄⓁⓊⓉⒾⓄⓃ♡:

(a+b) ²-(a-b) ²

→ a²+2ab+b²-a²-2ab+b²

→ 2b²

Answer 2

Answer:

(a+b)^2-(a-b)^2

=a^2+2ab+b^2-a^2+2ab-b^2

=4ab