如果N:M=2:3,且N不等于2,则N-M=1/N+M-5= 麻烦细一点感谢
如果m和n互为相反数,则m+2m+3m+4m+5m+5n+4n+3n+2n+n=
已知2m^2-5m-1=0,(1/n)^2+(5/n)-2=0,且m不等于n,求(1/m)+(1/n)的值.
已知m^2=2n+5,n^2=2m+5,且m不等于n,求m^3-4mn+n^3的值
已知:m^2=5m+1,n^2=5n+1,且m不等于n,求(m^2+n^2)/mn的值
如果m,n互为相反数,求m+2m+3m+4m+5m+5n+4n+3n+2n+n=多少
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
2x+n/m=m/n-(m/n+n/m)x(m+n不等于0)
已知:m*m=n+2,n*n=m+2.求m*m*m-2mn+n*n*n(m不等于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|=______.
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
集合M={m|m=3^n+6n-1,n∈N+,且m
求集合M={m|m=2n-1,n属于N*,且m