2m^2-m(2m-5n)-n(5m-n)的结果.

因式分解(n-m)^3(m-n)^2-(m-n)^5 （n-m)^3×(m-n)^2-(m-n)^5 36-5(m+n)-(m+n)^2 (1),(-m-n)(-m+n) (2),(-m+n)(m-n) (m-2n)(-m-n) m/n=5/3,求（m/m+n）+（m/m+n)-（n^2/m^2-n^2) 已知m/n=5、,求（m/（m+n）)+(m/(m-n))-(n^2/(m^3-n^2)) (m+5n)^2-2(5n+m)(n-3m)+(3m-n)^2 [2(m+n)^5-3(m+n)^4+(-m-n)^3]÷[2(m+n)^3] 5(m+n)(m-n)-2(m+n)平方-3(m-n)平方 [5m(3m-n)+2n(n-3m)]/(3m-n) (m-5n)(m-n)-6(m+2n)(m-3n)计算,要有过程 (m-5n)(m-n)-6(m+2n)(m-3n) 已知|m|=5,|n|=2 |m+n|=m+n,求m-n 因式分解m^5-m^3n-m^2+n, 2(m-n)²-m(m-n) (m-n)(m^5+m^4n+m^3n^2+m²n^3+mn^4+n^5) 计算4(m+n)^2·（-m-n)^3-(m+n)(-m-n)^4+5(m+n)^5