作业帮(n/m+n/2m^2)*4m/n^2
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(n/m+n/2m^2)*4m/n^2
(n/m+n/2m^2)*4m/n^2
(n/m+n/2m^2)*4m/n^2
(n/m+n/2m^2)*4m/n^2
=（4n+2n/m）/n^2
=（4+2/m）/n
=（4m+2）/mn
=(m^2-n^2)(-m^2-n^2)-(4m^2-n^2)(4m^2 n^2) =-(m^4-n^4)-(16m^4-n^4) =-（1^4-（-2)^4）-(16*1^4-(-2)^4) =
(1),(-m-n)(-m+n) (2),(-m+n)(m-n)
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
(m-2n)(-m-n)
(n/m+n/2m^2)*4m/n^2
[(m-n)^2*(m-n)^3]^2/(m-n)^4
[(m-n)^2*(m-n)^3]^2/(m-n)^4
4m^2(m+n)-9n^2(m+n)
因式分解4m^2(m-n)+4n(n-m)
4m(m-n)^2+4n(n-m)^3
（m-n)2(n-m)3(n-m)4化简
m-n+2n^2/(m+n)
化简,1.[(m+n-p)(m+p+n)-(m+n)²]/(-p),2.[(m+n)(m-n)-(m-n)²+2n(m-n)]/4n
(m-n)^2*(m-n)^4=?
(m-2n/n-m)-(n/m-n)=
4m(m-m)-2n(n-m)
2(m-n)²-m(m-n)
（m-n)(m+n)+(m+n)²-2m²
已知3m=4n,则m/m+n+n/m-n-m^2/m^2-n^2=