Question

factorise a²b+b-a-ab²​

Answer 1

Answer:

a²b +b-a-ab²

= a²b-ab²-a+b

=ab(a-b)-1(a-b)

=(a-b)(ab-1)

Answer 2

Step-by-step explanation:

Here is the solution to your answer

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

Hope it helps!!