(3m-2n)-(3m-6n+5)等于几
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(3m-2n)-(3m-6n+5)等于几
m方-【5m+3n】【5m-3n】+6【2m-n】【m+2n】等于多少
(-m^2n^3)^6/(-m^2n^3)等于
5m+2n-3m+ n 等于多少?
n-m等于-3则4-2m+2n等于几
若|m-3|+|n+2|等于0,则m+2n等于几
(m-5n)(m-n)-6(m+2n)(m-3n)计算,要有过程
(m-5n)(m-n)-6(m+2n)(m-3n)
m的绝对值为5,n的绝对值是3,m-n的绝对值等于m-n的相反数,则m+n等于几?
若m等于-5a+3b,N等于2a-7b,则M+N等于【】,M-N等于【】
若m等于-5a+3b,N等于2a-7b,则M+N等于【】,M-N等于【】
已知m/n = 5/3 求m/(m+n)+m/(m-n)-n^2/(m^2-n^2)等于多少?(要化简全过程)
2n+ 5-m=6等于几
3乘m加5乘n等于几
因式分解(n-m)^3(m-n)^2-(m-n)^5
(n-m)^3×(m-n)^2-(m-n)^5
已知a^m=3,a^n=5,则a的3m-2n次方等于几?
3x(M-5x)=6x²y³+N,求M与N分别等于几kkkkkk!