Question

因式分解：6*(x-y)^3+15*(y-x)^2-9*(y-x)^3 快

Answer 1

6*(x-y)^3+15*(y-x)^2-9*(y-x)^3=6*(x-y)^3+15*(x-y)^2+9*(x

-y)^3=15*(x-y)^3+15*(x-y)^2=15*(x-y)^2*(x-y+1)