已知m^2+n^2+2m-6n+10=0,则m+n等于?(m^2+2m+1)+(n^2-6n+9)=0,为什么10变成了
已知m^2+n^2+2m-6n+10=0,则m+n等于?(m^2+2m+1)+(n^2-6n+9)=0,为什么10变成了
已知m^2+n^2-6m+10n+34=0,求m-n
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
已知:2m-5n=0 求下式的值 (1+n/m-m/m-n)/(1+n/m-m/m-n)
已知2m-5n=0,求值:(1+n/m-m/m-n)÷(1-n/m-m/m+n)
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
m^2+4m+n^2-6n+13=0,则m+n=
若m^2+n^2-6n+4m+13=0则m-n=?
若(m-2n)/(2m+n)=3,则[3(m-2n)/(2m+n)-(m-2n)/[2(2m+n)] - {9(m-2n
已知m^2+n^2-10m+6n+34=0,求代数式2m+5n的值.
已知:m²+2m+n²-6n+10=0,求m,n的值
已知满足m²+n²+2m-6n+10=0,求m,n的值