Expended form of (3x-2y)cube
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Step-by-step explanation:
by using identity
(a-b)^3 =(a^3-b^3-3a^2b+ab^2)
( 3 x )^3 -( 2y)^3 -3(3x)^2(2y)+3(3x)(2y)^2
27x^3 -8y^3 -54x^2y + 36xy^2
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