4(-2mn+2m+3n)-2(3m+5n-mn),其中m+n=3,mn=-1
4个回答
4(-2mn+2m+3n)-2(3m+5n-mn)
=-8mn+8m+12n-6m-10n+2mn
=-6mn+2m+2n
=-6mn+2(m+n)
=-6×(-1)+2×3
=12
相关问题
(3m-5n+4mn)-(2m-4n+6mn)其中m-n=7,mn=-5
已知m-n=4,mn=-1,求:(2mn+2m+3n)+(3mn+2n-2m)-(m+4n+mn)
求多项式5m^2n+3mn^2-3m^2n-mn^2-4m^2n+3mn^2+1的值,其中m,n满足(m-2)^2+|n
已知m-n=5,mn=-3,求-(m+4n-mn)-(2mn-2m-3n)+(2n-2m-3mn)的值.
已知m-n=5,mn=-3,求-(m+4n-mn)-(2mn-2m-3n)+(2n-2m-3mn)的值
已知m-n=4,mn=-1,求:(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值.
已知m-n=4,mn=-1,求:(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值.
1.若m-n=4,mn=1,求(9-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值
1:已知m-n=4,mn=-1,求(-2mn+2m+3n)-(3mn+2n-2m)-(m+4n+mn)的值?
已知m-n=3,mn=-3,求(-m-4n-mn)-(2mn-2m-3n)-(3mn+2n-2m)的值