(6m^2n-6m^2n^2-3m^2)/(-3m^2)
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(6m^2n-6m^2n^2-3m^2)/(-3m^2)(6m^2n-6m^2n^2-3m^2)/(-3m^2)(6m^2n-6m^2n^2-3m^2)/(-3m^2)(6m^2n-6m^2n^2-3
(6m^2n-6m^2n^2-3m^2)/(-3m^2)
(6m^2n-6m^2n^2-3m^2)/(-3m^2)
(6m^2n-6m^2n^2-3m^2)/(-3m^2)
(6m^2n-6m^2n^2-3m^2)/(-3m^2)
=6m^2n/(-3m^2)-6m^2n^2/(-3m^2)-3m^2/(-3m^2)
=-2n+2n^2+1
(m-5n)(m-n)-6(m+2n)(m-3n)计算,要有过程
计算(m+4n)(m-n)-6(m+2n)(m-3n)
(m-5n)(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),
3m(m+n)-6(m^2-n^2)
6(m+n)²-2(m+n)
m-{n-2m+[3m-(6m+3n)+5n]}=
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