(3m+2n)^2-(m-n)^2
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
计算(3-m+n)*(3+m-n)-(2-m+n)*(2+m-n)
(3m-4n)(4n+3m)-(2m-n)(2m+n)
m-{n-2m+[3m-(6m+3n)-5n]}化简
化简m/(m+n)²+n/m²-n²-2n²/(m+n)(m²-n
已知|2m-n/m+2n|=3,求2(2m-n)/m+2n-2m-n/m+2n-3的值
若2m-n/m+2n=5,求3(2m-n)/m+2n-m+2n/2m-n+3的值
计算题:(1) 5(m+n)(m--n)--2(m+n)(m+n)--3(m-n)(m--n)
(m-n)立方;+2n(n-m)平方
(m+n)(m-n)-(1-2n)化简
已知:m*m=n+2,n*n=m+2.求m*m*m-2mn+n*n*n(m不等于n).
(3m+2n)^2-(m-n)^2