Question

4. which of the following is the correct factorisation of ab - a - b + 1 ?*
(1 Point)
O -
ab - a - b + 1 = (1 - a)(1 + b)
ab - a - b + 1 = (a - 1)(b - 1)
b
ab - a - b + 1 = (1 - a)(b - 1)
ab - a - b + 1 = (a - 1)(1-b)
a​

Answer 1

Answer:

ab-b-a+1

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

(a-1) (b-1)

Answer 2

Answer:

good afternoon dear friend paro tu dekh itna bhi pdhai mt kr