Question

(a-b)(b-a)^2(-a+b)^4 (m-n)^2*(n-m)^4*(n-m)^3

Answer 1

(a-b)(b-a)^2(-a+b)^4

=-(b-a)(b-a)²(b-a)^4

=-(b-a)^7

(m-n)^2*(n-m)^4*(n-m)^3

=(n-m)^2*(n-m)^4*(n-m)^3

=(n-m)^9