Question

Prove that (x-y) (x^+xy+y^)=x°-y°

Answer 1

Step-by-step explanation:

LHS:

(x-y)(x²+xy+y²)

=x(x²+xy+y²)-y(x²+xy+y²)

=x³+x²y+xy²-(x²y+xy²+y³)

=x³+x²y+xy²-x²y-xy²-y³

=x³-y³

=RHS

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