如果m,n为有理数,且满足/m+n+2/+(m-2n+8)²=0,则mn=

如果m,n为有理数,且满足/m+n+2/+(m-2n+8)²=0,则mn= 如果m,n为有理数,且满足/m+n+2/+(m-2n+8)^2=0,则mn=____.(讲清楚,每一步都写出来, 如果m，n为实数，且满足|m+n+2|+（m-2n+8）2=0，则mn=______． 若m,n为有理数,且2 m^2-2mn+n^2+4m+4=0,则m^2n+mn^2= mn为自然数,且满足168+n^2=m^2,求m和n 若有理数m,n满足|2m+1|+(n+2)的平方=0则mn是几 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 已知,A的坐标为(m,n),且m,n满足(2m+n-6)^2+/m-2/=0 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( ) 设m,n为自然数,mn|m^2+n^2,则m=n 若m是无理数,且m,n满足mn+m+n+1=0,试问：n是有理数还是无理数?请说明你的理由 已知m,n为整数,且满足2m^2+n^2+3m+n-1=0