Question

Factorise: x(x-y)^3 + 3x^2y(x-y)

Answer 1

x(x - y)( ( x - y )^2 + 3xy )

x ( x - y ) ( x^2 + y^2 - 2xy + 3xy )

x ( x - y ) ( x ^2 + y^2 + xy )

Answer 2

Answer:

I've done the sum in the picture attached.