求m,n 以知 3m-2n=4 2m-3n=6
若(2m-n)²=3mn,求代数式n/m+4m/n-1的值
已知m-2n/2m+n=5,求代数式3(m-2n)/2m+n-15(2m+n)/m-2n-2
一道数学题m+n/2+m-n/3=6 ,4(m+n)-5(m-n)=2
计算(m+4n)(m-n)-6(m+2n)(m-3n)
(m+4n)(m-n)-6(m+2n)(m-3n),
(m+4n)(m-n)-6(m+2n)(m-3n)
[(m-n)^2*(m-n)^3]^2/(m-n)^4
(m-n)2(n-m)3(n-m)4化简
以知m^2+9n^2+6m+6n+10=0,求(m^2-6mn+9n^2)除以(m-3n)-(4m^2-9n^2)除以(
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
1.以知m-2n=-2 ,求-3-2m+4n的值
如果m,n互为相反数,求m+2m+3m+4m+5m+5n+4n+3n+2n+n=多少