m-[n-3m-(m-n)]=?
n=m/M
已知m/n=5/3,求m/(m+n)+m/(m-n)-n平方/(m平方-n平方)
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?
集合M={m|m=3^n+6n-1,n∈N+,且m
若(m-2n)/(2m+n)=3,则[3(m-2n)/(2m+n)-(m-2n)/[2(2m+n)] - {9(m-2n
设m n为自然数,定义m*n=m+(m+1)+(m+2)+(m+3)+.(m+n)
m-{n-2m+[3m-(6m+3n)+5n]}=
m-{3n-4m+[m-5(m-n)+m]}=______.
已知m/n=5/3 求(1/m+n+1/m-n)÷1/n-n/m-n÷m+n/n的值,
已知:m/n=5/3,求(1/m+n+1/m-n)÷1/n-n/m-n÷m+n/n的值
(m+n)²-6(m+n)+9=(m+n)²+2(m+n)×(-3)+(-3)²=[(m+