Question

$a {}^{2} - (b - 5)a - 5b$
​

Answer 1

We have,

$\quad {a}^{2} - (b - 5)a - 5b \\ \\ = {a}^{2} - ab + 5a - 5b \\ \\ = a(a - b) + 5(a - b) \\ \\ = (a - b)(a + 5)$

Answer 2

a²- (b-5)a -5a

(a+b)(a-5)

The simple form of the above is (a+b)(a-5)

Hope this helps you