Factorise 8x³-(2x-y)³
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it is in the form:- a³-b³, (2x)³-(2x-y)³
so,(2x-2x+y){4x²+(2x-y)² +2x ×( 2x-y)}
= y(4x²+4x² + y²-4xy +4x²-2xy)
= y(12x²-6xy +y²)
so,(2x-2x+y){4x²+(2x-y)² +2x ×( 2x-y)}
= y(4x²+4x² + y²-4xy +4x²-2xy)
= y(12x²-6xy +y²)
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