Question

(a-b)(a+b+2) = ?
Please help me to solve this question :)

Answer 1

Answer:

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

$= {a}^{2} - ab + ab - {b}^{2} + 2a - 2b$

$= {a}^{2} + 2a - 2b - {b}^{2}$

Answer 2

Answer:

a²+ab+2a-ab-b²-2b

a²+b²+2a-2b

a²+b²+2(a-b)