F.2 factorization

Question and Answer :

Factorize the following expressions, x(a-1)+y(1-a) .


x(a-1)+y(1-a)
= x (a-1) + y [ - (a-1) ]
= x (a-1) - y (a-1)
= (x-y) (a-1) #

x(a-1)+y(1-a)
=x(a-1)-y(a-1)
=(a-1)(x-y) //

Suggested solution

x(a - 1) + y(1 - a)

= x(a - 1) - y(a - 1)

= (x - y)(a - 1)