Question

a) Factorise: ab2-(a-1)b-1​

Answer 1

Answer:

ab2-ab+b-1

Step-by-step explanation:

ab2-(a-1)b-1

=ab2-ab+b-1

Answer 2

Answer:

$\huge\mathcal\colorbox{yellow}{{\color{blue}{✿Yøur-Answer}}}$

$a {b}^{2} + (a - 1)b - 1 \\ = a {b}^{2} + ab - b - 1 \\ = ab(b + 1) - 1(b - 1) \\ = (b + 1)(ab - 1)$