(2m-3n+2)(2m+3n+2)
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(2m-3n+2)(2m+3n+2)(2m-3n+2)(2m+3n+2)(2m-3n+2)(2m+3n+2)(2m-3n+2)(2m+3n+2)=x²-（3n+2）²=x²
(2m-3n+2)(2m+3n+2)
(2m-3n+2)(2m+3n+2)
(2m-3n+2)(2m+3n+2)
(2m-3n+2)(2m+3n+2)
=x²-（3n+2）²
=x²-9n²+12n+4
[(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
2(m-n)的2次-(m+n)(m-2n)-3n(n-m)
2m-3n-m+2n
(m-n)3-(2n-m)3
(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)=?