m²+n²+2m-6n+10=0,m+n=?
(m+n)²-6(m+n)+9=(m+n)²+2(m+n)×(-3)+(-3)²=[(m+
已知满足m²+n²+2m-6n+10=0,求m,n的值
若m²+2m+n²-6n+9=0,求m和n的值.m²
若|m-n|+(m+2n-3)²=0,则m+n的值是
已知m^2+n^2-6m+10n+34=0,求m-n
先化简再求值:(2m-n)(m+n)+(m-n)²-(6m³-4m²n)÷2m,其中m=2
先化简再求值[(m+n)(m-n)-(m-n)²]÷(2n),其中m=-2,n=-1/2
已知m²-2m-3=0 n²-2n-3=0 m≠n 求1.m²-m+n 2.2n²
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
mn(m-n)²-n(n-m)³=n(m-n)²( )
已知m²+2m+n²-6n+10=0,则mn=
已知m²+n²-6m+10n+34=0,求m+n的值