(3m-2n)^3+(3m+2n)^3
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(3m-2n)^3+(3m+2n)^3(3m-2n)^3+(3m+2n)^3(3m-2n)^3+(3m+2n)^3a^3+b^3=(a+b)(a^2-ab+b^2)(3m-2n)^3+(3m+2n)^
(3m-2n)^3+(3m+2n)^3
(3m-2n)^3+(3m+2n)^3
(3m-2n)^3+(3m+2n)^3
a^3+b^3=(a+b)(a^2-ab+b^2)
(3m-2n)^3+(3m+2n)^3
= (3m-2n + 3m+2n)[(3m-2n)^2 - (3m-2n)(3m+2n) +(3m+2n)^2]
= 6m(9m^2 + 12n^2)
= 54m^3 + 72mn^2
[(m-n)^2*(m-n)^3]^2/(m-n)^4
[(m-n)^2*(m-n)^3]^2/(m-n)^4
3m(m-n)-2n(m-n)的平方
因式分解(n-m)^3(m-n)^2-(m-n)^5
（m-n)2(n-m)3(n-m)4化简
（n-m)^3×(m-n)^2-(m-n)^5
计算(m+n)^3-(n+m)(m-n)^2
(m-n)^3(n-m)^2(m-n)=_____
4m(m-n)^2+4n(n-m)^3
(m-n)3-(2n-m)3
2(m-n)的2次-(m+n)(m-2n)-3n(n-m)
2m-3n-m+2n
(3m-n)(m-2n)=()
(m+2n)(m-3n)
(m-3n)(2m+n)
约分(m-n)^2/(n-m)^3
分解因式(2m-n)(2m-n)(2m-n)+3n(n-2m)(n-2m)
已知3m=2n,则m/(m+n)+n/(m-n)-n^2/(m^2-n^2)=?