Simplify 2x (z – x - y) + 2y(z – y – x) -3z ( 4x – 2y –z)
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Answer:
8yz-8xz-6xy-2x^2-2y^2+3z^2
Step-by-step explanation:
2x (z – x - y) + 2y(z – y – x) -3z ( 4x – 2y –z)
= 4xz-2x^2-2xy+2yz-2y^2-4xy-12xz+6yz+3z^2
= 8yz-8xz-6xy-2x^2-2y^2+3z^2
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