已知实数m.n满足m^2-7m+2=0,n^2-7n+2=0,求代数式n/m+m/n的值

已知实数m.n满足m^2-7m+2=0,n^2-7n+2=0,求代数式n/m+m/n的值 已知实数m、n满足根号下2m-3n-3+m-2n-2的绝对值=0,求7m-8n的立方根 已知实数m,n满足m^2-2m-1=0,n^2-2n-1=0,求n/m+m/n的值?如题, 已知实数m,n满足m^2+m-2009=0,1/n^2-1/n-2009=0,(mn不等于-1),则1/m-n=? 已知实数m,n满足等式m2-m-根号3=0,n2-n-根号3=0,且m不等于n,求(mn)2-m-n 若实数m n 满足(m+n)(m+n-2)-8=0 则m+n=? 已知m、n是实数,且满足m²+2n²+4/3n+17/36=0,则 已知实数m、n满足m2+n2=1,求动点P(m+n,2m-n)的轨迹方程. 实数m、n满足（m-n）（m-n）+m-n-2=0,则m-n的值为?急..... 已知m,n是实数,且满足m^2+2n^2+m-3/4n+17/36=0,则-mn^2的平方根是( ) 已知实数m n满足:m/x-1+n/x+2=2x+7/(x-1)(x+2).求m和n 速求已知实数m,n满足等式m^2-m-√3=0,n^2-n-√3=o,且m不等于n,求(mn)^2-m-n值 若实数m,n满足|m-3|+(n+2)2=0,则m+2n的值为多少 已知sina+mcosa=n,求msina-cosa的值(实数m,n满足1+m^2>n^2) 已知实数M,N满足M的平方-4M-1=0,N的平方-4N-1=0,则M/N+N/M= 已知实数M,N满足M的平方-4M-1=0,N的平方-4N-1=0,则M/N+N/M= 已知实数m.n满足m+m-1=0,n+n-1=0,求m/n+n/m的值如题 实数m,n满足1/2m-mn+n平方+2=0,则m的取值为