I am a middle school teacher and a parent. I am snowed in and trying to help my 9th grader get ready for 9 weeks exams. I have tried to factor this problem to no avail. (uv)^3+vu. I have the answer but I need to know how it is done. I tried writing out (uv)(uv)(uv)+vu and foiling the first two. Next I multiplied that trinomial by (uv) that leaves me with u^33u^2v+3uv^2v^3+vu (unless I hve gone wrong somewhere). Anyway that really doesn't help me. Any help would be appreciated. Hi,What you need to see here is a common factor. First write (uv)^{3}+vu as (uv)^{3}(uv) and then take out the common factor (uv) to get Now you need to recognize that (uv)^{2}1 factors as a difference of squares Penny
