Question

a(a-1)-b(b-1) factorise difference of two squares pls

Answer 1

Answer:

(a-b)[a+b-1] is the answer

Step-by-step explanation:

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

=a^2-a-b^2-b

=a^2-b^2-a+b

=( a+b ) (a-b) (a-b) [a^2-b^2=(a+b) (a-b)

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

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