m/2m+n,2n/2n-4m,1/4m^2-n^2通分
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
[(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
先化简,在求值(m+n)(m-n)(-m^2-n^2)-(-2m+n)(-2m-n)(4m^2+n^2) 其中m=1,n
m-n+2n^2/(m+n)
(m-n)^2 +n(n- m)
(m-n)+2n(m-n)
计算1/(m-n)-1/(m+n)-2n/(m^2+n^2)-4n^3/(m^4+n^4)-8n^7/(m^8+n^8)
数学分式通分1/m+n;1/m^2n-mn^2[通分]
m-n-m方+n方分之m和1-m方-2mn-n2分之n 通分
(3m-4n)(4n+3m)-(2m-n)(2m+n)