Question

(x-y)^2-(x-y)^3因式分解

Answer 1

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

=(x-y)^2[1-(x-y)]

=(x-y)^2(1-x+y)

2.（x+y）^2-（x+y）^3

=（x+y)^2[1-(x+y)]

=(x+y)^2(1-x-y)

3、（x-y）^2-（y-x）^3

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

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

=(x-y)^2(1+x+y)