Factorise x^3+8y^3+6xy(x+2y)
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There's a property based on cubes which states that
(a+b)^3=a^3+b^3+3ab(a+b)
And by using this property you get your question's answer to be
(x+2y)^3
which can be simplified as (x+2y)(x+2y)(x+2y)
(a+b)^3=a^3+b^3+3ab(a+b)
And by using this property you get your question's answer to be
(x+2y)^3
which can be simplified as (x+2y)(x+2y)(x+2y)
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