若2m+n=25,m-2n=2,则(m+3n)2-(3m-n)2=______.
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
若2m+n=25,m-2n=2,则(m+3n)2-(3m-n)2=______.
若(m-2n)/(2m+n)=3,则[3(m-2n)/(2m+n)-(m-2n)/[2(2m+n)] - {9(m-2n
已知m,n,p都是整数,且|m-n|+|p-m|=1,则|p-m|+|m-n|+3(n-p)2=______.
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
若|m-n|=n-m,且|m|=4,|n|=3,则(m+n)2=______.
若2m-n/m+2n=5,求3(2m-n)/m+2n-m+2n/2m-n+3的值
m,n互为相反数,则(3m-2n)-(2m-3n)=______.
已知2m+n分之m-2n=3,则2m+n分之3(m-2n)+3(2m+n)分之m-2n-4(2m+n)分之5(m-2n)
已知|2m-n/m+2n|=3,求2(2m-n)/m+2n-2m-n/m+2n-3的值
若5m-3n=-4,求出2(m-n)+4(2m-n)
已知m,n,p都整数,且|m-n|3+|p-m|5=1,则|p-m|+|m-n|+2|n-p|=______.