2x(z-x-y) + 2y (z-y-x)
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Answer:
=-2x²-4xy+2xz+2yz-2y²
Step-by-step explanation:
2x(z-x-y) + 2y (z-y-x)
=2xz-2x²-2xy + 2yz-2y²-2xy
=-2x²-2xy-2xy+2xz+2yz-2y²
=-2x²-4xy+2xz+2yz-2y²
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