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Question

Factorise 8x3+27y3+36x3y+54xy2

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Solution

Given that:
8x3+27y3+36x2y+54xy2

=(2x)3+(3y)3+3(2x)2(3y)+3(2x)(3y)2

Since we know (a+b)3=a3+b3+3a2b+3ab2

Therefore,

=(2x+3y)3

=(2x+3y)(2x+3y)(2x+3y)

Hence , factorization of given expression is (2x+3y),(2x+3y) and (2x+3y).

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