Question

.Factorise : 1- a -b + ab​

Answer 1

Answer:

(1-a)(1-b)

Step-by-step explanation:

according to the identity 1

(x)² + (a+b)x + ab = (x+a)(x+b)

=(1)² + [(-a)+(-b)]1 + [(-a)(-b)]

=(1-a)(1-b)

HOPE THIS WILL HELP YOU

PERHAPS LOL