Question

simplify (x-2y-z) (x2+4y2+z2+2xy+zx-2yz​

Answer 1

Answer:

(x-2y-z) (x^2+4y^2+z^2+2xy+zx-2yz)

=x^3+4xy^2+xz^2+2x^2y+zx^2-2xyz-2x^2y-8y^3--2yz^2-4xy^2-2xyz+4y^2z-zx^2-4y^2z-z^3-2xyz-z^2x+2yz^2

=x^3-8y^3-z^3-4xyz

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