若1m−1n=3,2m+3mn−2nm−2mn−n的值是( )
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=2,mn=1,则多项式(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值是______.
已知m-n=3,mn=-1,求多项式-2mn+2m+3n-3mn-2n+2m-4n-m-mn的值
已知m-n=2,mn=1,求多项式(2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值
若m-n=4,mn=-1,求代数式(9-2mn+2m+3n)-(m+4n+mn)的值
若m-n=4,mn=-1,求(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值
已知|m-n-2|与(mn-1)^互为相反数,求(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值
若m-n=4,mn=-1求(9-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)
知m*m-mn=1,4mn-3n*n=-2,则m*m+3mn-3n*n的值是多少
已知1/m-1/n=2,试求(3m+mn-3n)/(m-mn-n)的值
若m+n=5,mn=-6,则(m+n)2 −4mn