已知2m²-5m-1=0,(1/n)²+5/n-2=0,且m不等于n,求代数式n/m+m/n的值
已知2m²-5m-1=0,(1/n)²+5/n-2=0,且m不等于n,求代数式n/m+m/n的值
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=5m+1,n^2=5n+1,且m不等于n,求(m^2+n^2)/mn的值
已知,m+1/(m+1)=n+ 1/(n-1)-2,且m-n+2不等于0,试求mn-m+n的值.
已知m,n为实数,m不等于n且m的平方-2n-5=0,n的平方-2m-5=0,求m分之n+n分之m的值
已知:2m-5n=0 求下式的值 (1+n/m-m/m-n)/(1+n/m-m/m-n)
已知m+n=2,试求代数式m²(1+n)+n²(1+m)的值
已知m+n=2,求代数式m²(1+n)+n²(1+m)的值
已知m^2+n^2-10m+6n+34=0,求代数式2m+5n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-2n=3.求[(3m+2n)(3m-2n)-(m+2n)(5m-2n)]÷1/3 m 的值.
已知m^2=m+1 n^2=n+1且m不等于n求下列各式的值①m+n②mn