Question

factorize a2-a-b2+b... and give the answer

Answer 1

Answer:

a²-b²-a+b=(a-b)(a+b-1)

Step-by-step explanation:

=a²-b²-a+b=(a²-b²)-(a-b)

=(a+b)(a-b)-1(a-b)=(a-b)(a+b-1)