(-9m^2+4n^2)÷(3m+2n)
[(m+n)(m-n)-(m-n)²+2n(m-n)]÷4n
[2(m+n)^5-3(m+n)^4+(-m-n)^3]÷[2(m+n)^3]
[(m-n)^2*(m-n)^3]^2/(m-n)^4
(m-n)2(n-m)3(n-m)4化简
计算[5(m+n)2(m-n)]3÷【3(m+n)2(n-m)]2
(3m-2n)^+(3m+2n) (3m-2n)-9(m+n)^
(3m-4n)(4n+3m)-(2m-n)(2m+n)
计算(m+4n)(m-n)-6(m+2n)(m-3n)
(m+4n)(m-n)-6(m+2n)(m-3n),
(m+4n)(m-n)-6(m+2n)(m-3n)
若(m-2n)/(2m+n)=3,则[3(m-2n)/(2m+n)-(m-2n)/[2(2m+n)] - {9(m-2n
【(m+n)(m-n)-(m-n²)+2n(m-n)】÷4n