Question

add the following 2x(z-x-y) and 2y(z-y-x)

Answer 1

This attachment is required answer.

Answer 2

2x(z-x-y) + 2y(z-y-x)
=2xz-2x^2-2xy+2yz-2y^2-2xy
=2x^2-2y^2-4xy-2yz+2xz Ans.