若实数m,n满足m²+n²-4m-14n+45=0,求k=n-3/m+2的max和min
已知,m≠n且满足m²-2m=1 n²-2n=1,求代数式2m²+4n²-4n+
已知√m-n +√3m-2n=0,求4m²-mn+6n²-2m²+6mn-10n²
已知,单项式M,N满足2x(M+3x)=6x²y²+N,求M,N
已知(m-1)²+|6m+3n|=0,求(4m²-mn-6n²)-2(m²-3m
若m²+n²-6n+4m+13=0,则m²-n²=
m²+n²=5,mn=2,求代数式[(6m²-5m(-m+3n)+4m(-4m+5/2n)
已知m,n满足:m²-3m=1,n²-3n=1,求n/m+m/n
已知:m²+2m+n²-6n+10=0,求m,n的值
如果m、n是两个不相等的实数,且满足m²-2m=1,n²-2n=1,那么代数式2m²+4n
如果m,n是两个不相等的实数,且满足m²-2m=1,n²-2n=1,那么代数式2m²+4n
若方程m(x-2)²=3n-2有实数根,求m,n的取值范围?
已知m,n是方程X²-3X+1=0的两根,求代数式2m²+4n²-6n+1996的值