d) 8x^3 – 12x^2y + 6xy^2 – y^3.
d) 8x3 – 12x2y + 6xy2 – y3.
d) 8x3 – 12x2y + 6xy2 – y3
= (2x)3 – 3 . (2x)2 . y + 3 . 2x . y2 – y3 = (2x – y)3.