Question

1. Factorise completely.
(a) ab-a-b+1​

Answer 1

Answer:

hey mate here is ur ans

Step-by-step explanation:

ab-a-b+1

a(b-1) -1(b-1)

(a-1) (b-1)

hope it help u

Answer 2

Answer:

ab - a - b + 1

a(b-1) - 1(b-1)

(a-1) (b-1)

a = 1,1