[(x+y)^3 ]^4乘[-(x+y)^2]^3=?___________ ___________ ___________ ___________ ___________

问题描述:

[(x+y)^3 ]^4乘[-(x+y)^2]^3=?___________ ___________ ___________ ___________ ___________

原式 = (x+y)^12 * [-(x+y)^6] = - (x+y)^18OK,thank you very much!You are very good!