如果m-3n+4=0 求(m-3n)^2+7m^3-3(2m^3n-m^2n-1)+3(m^3+2m^3n-m^2n+n

[(m-n)^2*(m-n)^3]^2/(m-n)^4 （m-n)2(n-m)3(n-m)4化简 已知m/n=5、,求（m/（m+n）)+(m/(m-n))-(n^2/(m^3-n^2)) 如果m-3n+4=0 求(m-3n)^2+7m^3-3(2m^3n-m^2n-1)+3(m^3+2m^3n-m^2n+n 如果m,n互为相反数,求m+2m+3m+4m+5m+5n+4n+3n+2n+n=多少 计算(m+n)^3-(n+m)(m-n)^2 （n-m)^3×(m-n)^2-(m-n)^5 因式分解(n-m)^3(m-n)^2-(m-n)^5 3m(m-n)-2n(m-n)的平方 已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=? 计算1/(m-n)-1/(m+n)-2n/(m^2+n^2)-4n^3/(m^4+n^4)-8n^7/(m^8+n^8) 如果m和n互为相反数,则m+2m+3m+4m+5m+5n+4n+3n+2n+n=