(2m-n)^2(n^2+4m^2)^2(2m+n)^2
(3m-4n)(4n+3m)-(2m-n)(2m+n)
【(m+n)(m-n)-(m-n²)+2n(m-n)】÷4n
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
m-n+2n^2/(m+n)
(m-n)^2 +n(n- m)
(m-n)+2n(m-n)
化简m/(m+n)²+n/m²-n²-2n²/(m+n)(m²-n
已知m/n=5、,求(m/(m+n))+(m/(m-n))-(n^2/(m^3-n^2))
[(m-n)^2*(m-n)^3]^2/(m-n)^4
因式分解4m^2(m-n)+4n(n-m)
(m-n)2(n-m)3(n-m)4化简
计算(3-m+n)*(3+m-n)-(2-m+n)*(2+m-n)