3ab^2(a-b)^3+12a(b-a)

2025-01-04 02:12:26
推荐回答(1个)
回答1:

=3ab²(a-b)³-12a(a-b)
=3a(a-b)[b²(a-b)²-4]
=3a(a-b)(ab-b²+2)(ab-b²-2)