Question

(xy减去x的平方)的3次方减去x的3次方(y减去x)

Answer 1

因式分解吗?

(xy - x^2)^3 - x^3 *(y-x) = [x(y - x)]^3 - x^3 *(y-x) = x^3 *(y-x)^3 - x^3 *(y-x) = x^3 *(y-x)[(y-x)^2-1] = x^3 *(y-x)(y-x+1)(y-x-1)