若有理数m、n 满足|2m-1|+(2/3n+1)^2=0 则mn=( )
若有理数m,n满足|2m+1|+(n+2)的平方=0则mn是几
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,
若m,n为有理数,且2 m^2-2mn+n^2+4m+4=0,则m^2n+mn^2=
若实数m,n满足|2m-1|+(n+2)2=0,则mn的值等于( )
若数m.n满足|2m-1|+(n+2)的2次方=0 则mn的值等于
已知实数m,n满足m^2+m-2009=0,1/n^2-1/n-2009=0,(mn不等于-1),则1/m-n=?
若非零实数m,n满足m^2=mn-1/4n^2,则n/m=?
若m-n=4,mn=-1求(9-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)
若m-n=4,mn=-1,求(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值
若m-n=4,mn=-1,求(-2mn+m+n)-(3mn+5n-5m)-(m+4n-3mn)的值
若m+n=0,则多项式m^3-m^3n-mn^2+n^3