Question

factorise a^2b(x-y)^2+ab^2(y-x)

Answer 1

a^2b(x-y)^2+ab^2(y-x)
-a^2b(y-x)^2+ab^2(y-x)
y-x(y-x)(-a^2b)+(y-x)(ab^2)
y-x(-a^2by+a^2bx)+y-x(ab^2)
y-x(-a^2by+a^2bx+ab^2)