Question

A. x^3+6x^2y+12xy^2+8y^3
b. x^2+y^2+z^2+2xy-2xz-2yz​

Answer 1

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Explanation:

a) (((x3)+((6•(x2))•y))+(12x•(y2)))+23y3

b) x2+y2+z2-2xy+2xz-2yz

=x^2+y^2+z^2-2xy+4-2yz

=x^2+y^2+z^2-2xy+4-2yz