Question

factorize the following polynomial :
$ab {}^{2} + (a - 1)b - 1$
​

Answer 1

ab^2+ab-b-1 .................

Answer 2

Step-by-step explanation:

ab^2 + (a-1)b-1

=ab^2 + ab - b - 1

=ab(b+1) - 1(b+1)

=(b+1) (ab-1)