Question

Add 2x ( z – x – y ) and 2y ( z – y – x )​

Answer 1

Step-by-step explanation:

2x(z-x-y)= 2xz-2x²-2xy

2y(z-y-x)= 2yz-2y²-2xy

2yz-2y²-2xy+ 2yz-2y²-2xy

-2x²-2y²+2xz+2yz-4xy

-2(x²+y²-xz-yz+2xy)

Answer 2

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

Step-by-step explanation:

2x ( z – x – y ) + 2y ( z – y – x )

= 2xz - 2x^2 -2×y + 2zy - 2y^2 -2xy

= 2x^2 - 2y^2 - 4xy +2zx - 2zy

= 2 ( x^2 -y^2 - 2xy + zx - zy)