(1)6(m-n)³-12(n-m)²(2)3a(a-2b)²-18b(2b-a)²
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![(1)6(m-n)³-12(n-m)²(2)3a(a-2b)²-18b(2b-a)²](/uploads/image/z/6950297-65-7.jpg?t=%EF%BC%881%EF%BC%896%EF%BC%88m-n%EF%BC%89%26%23179%3B-12%EF%BC%88n-m%EF%BC%89%26%23178%3B%EF%BC%882%EF%BC%893a%EF%BC%88a-2b%EF%BC%89%26%23178%3B-18b%EF%BC%882b-a%EF%BC%89%26%23178%3B)
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(1)6(m-n)³-12(n-m)²(2)3a(a-2b)²-18b(2b-a)²
(1)6(m-n)³-12(n-m)²
(2)3a(a-2b)²-18b(2b-a)²
(1)6(m-n)³-12(n-m)²(2)3a(a-2b)²-18b(2b-a)²
1
原式=6(m-n)³-12(m-n)²
=6(m-n)²(m-n-2)
2
原式=3a(a-2b)²-18b(a-2b)²
=3(a-2b)²(a-6b)