Factorise the polynomial:
8x³- ( 2x - y )³
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Answer:
8x^3-(2x-y)^3
=(2x)^3-(2x-y)^3
={(2x)-(2x-y)}{(2x)^2+(2x)(2x-y)+(2x-y)^2}
=(2x-2x+y)(4x^2+4x^2-2xy+4x^2-4xy+y^2)
=y(12x^2-6xy+y^2)
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