若5m-3n<0,化简|5m-3n-1|-|2-5m+3n|
(n-m)^3×(m-n)^2-(m-n)^5
因式分解(n-m)^3(m-n)^2-(m-n)^5
若5m-3n<0,化简|5m-3n-1|-|2-5m+3n|.
若5m-3n<0,化简|5m-3n-1|-|2-5m+3n|
化简-3n+5m-[m-5(m-n)+m]
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
m-{n-2m+[3m-(6m+3n)-5n]}化简
初一计算:(m+5n)(m-n)-6(m+2n)(n-3n)?
(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]
[5m(3m-n)+2n(n-3m)]/(3m-n)
计算[5(m+n)2(m-n)]3÷【3(m+n)2(n-m)]2