Expand i)x+2y to the power of 3 – InterviewSolution

1.	Expand i)x+2y to the power of 3
Answer» x³ + 8y³ + 6x²y + 12xy²Step-by-step explanation:USING the IDENTITY, [ (X+y)³ = x³ + y³ + 3x²y + 3xy² ](x+2y)³ = x³ + 8y³ + 3(x)²(2y) + 3(x)(2y)² = x³ + 8y³ + 6x²y + 12xy²Hope this helps.....

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