m-{n-2m+[3m-(6m+3n)+5n]}=
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]}=
(m-5n)(m-n)-6(m+2n)(m-3n)
(n-m)^3×(m-n)^2-(m-n)^5
因式分解(n-m)^3(m-n)^2-(m-n)^5
初一计算:(m+5n)(m-n)-6(m+2n)(n-3n)?
已知m/n=5/3,求m/(m+n)+m/(m-n)-n平方/(m平方-n平方)
若m、n互为相反数,则(5m-3n)-(2m-6n)=
m-{n-2m+[3m-(6m+3n)-5n]}化简
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
m方-【5m+3n】【5m-3n】+6【2m-n】【m+2n】等于多少
(m+n)²-6(m+n)+9=(m+n)²+2(m+n)×(-3)+(-3)²=[(m+