设实数m,n满足19m^2+20m+1=0,n^2+20n+19=0且mn不等于0,求2mn+3m+2/n的值

设实数m,n满足19m^2+20m+1=0,n^2+20n+19=0且mn不等于0,求2mn+3m+2/n的值 设实数m,n满足19m2+20m+1=0,n2+20n+19=0,且mn不等于1,求（2mn+3m+2)/n的值 设实数m,n满足m^2*n^2+m^2+n^2+10mn+16=0,则m= ,n= 设实数m,n满足m^2n^2-2n+8m+17=0,则n=_,m=_ 设实数m,n满足m^2n^2+m^2+n^2+10mn+16=0求m^n 设数列a(n)满足a(n+1)=ma(n)+2^n,m为常数.是否存在实数m,使得数列{a(n)}为等差数列. 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, 设正整数m,n满足m(m-1)=7*n^2,求证：m为平方数.无 设m、n都是实数,且满足 n=√m²-4＋√4-m²＋2/m-2 求√mn的值 已知实数m、n满足m2+n2=1,求动点P(m+n,2m-n)的轨迹方程. 若实数m、n满足m+n=3,且m-n=1 则m= ,n= . 若实数m n 满足(m+n)(m+n-2)-8=0 则m+n=? 设实数m,n满足4m^2+n^2=8,求√（m^2+n^2-4n+4)+√(m^2+n^2-4m-4n+8)的最小值. 设实数x,y,m,n满足 x^2+y^2=1,m^2+n^2=1,则mx+ny的取值范围 设实数x,y,m,n满足x^2+y^2=3,m^2+n^2=1,求mx+ny的最大值． 设实数x,y,m,n满足x^2+y^2=3,m^2+n^2=1 ,则mx+ny的最大值为 设实数M,N,P,Q.满足MQ-NP=1,M^2+N^2+P^2+Q^2-MN+PQ=1.求MNPQ 实数m,n满足1/2m-mn+n平方+2=0,则m的取值为