(m^2n^2+1)^2-4m^2n^2
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
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)^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
m-n+2n^2/(m+n)
(m-n)^2 +n(n- m)
(m-n)+2n(m-n)
因式分解m^2-(n+1)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)
分式加减法:化简:2m/m-n-n/n-m+m+2n/n-m
计算m+2n/n-m+n/m-n-2m/n-m