I am close but can't seem to figure out how to factor 6xy^2(3y-x)-3x^2(x-3y)^2
Please help me. I have the answer but need to see the steps. The answer is -3x(x-3y)(x-y)(x-2y). I got the first half of the answer but can't figure out the last 2 parenthesis. Going nutz!
Emilia.