Question

Expand : (x-2y) cube​

Answer 1

Xcube- 8(ycube) - 6(xsquare)y+12x(ysquare)

Explanation:

(x-2y)^3 = x^3 +(-2y)^3+3(x^2)(-2y)+3(x) (-2y)^2

=x^3 -8y^3-6x^2×y+12xy^2