-4n+3m=﹣11 3n-4m=-53
-4n+3m=﹣11 3n-4m=-53
如果m和n互为相反数,则m+2m+3m+4m+5m+5n+4n+3n+2n+n=
如果m,n互为相反数,求m+2m+3m+4m+5m+5n+4n+3n+2n+n=多少
计算:1.[(m+n)(n-m)-(m+n)^2+3m(m+n)]除以(-2M),其中m=-4,n=2 2.(x+y)(
m-{3n-4m+[m-5(m-n)+m]}=______.
已知2m+n分之m-2n=3,则2m+n分之3(m-2n)+3(2m+n)分之m-2n-4(2m+n)分之5(m-2n)
若|m-n|=-(m-n),且|m|=4,|n|=3,则m=();n=();
已知m²+n²=10,m*n=4,则代数式-m^3n-n^3m=
|m-n|=n-m,|m|=4|n|=3,则|(m+n)|^2=_______?
2分之m+n-3分之m-n=1,3分之m+n-4分之m-n=-1
3m+4n-[2m+(5m-2n)-3n]其中m=n分之一=2
绝对值m-n=n-m,且绝对值m=4,绝对值n=3,则【m+n】的平方?