X3-y3 (x-y) (x2+xy+y2) – InterviewSolution

1.

X3-y3 (x-y) (x2+xy+y2)

Answer»

RHS = (x-y) (x2 + XY + y2)

= x3 + X2Y + xy2 - x2y - xy2 - y3

= x3 - y3

this is EQUAL to LHS

Hence PROVED or verified

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