(8a的三次方b-5a²b²)/4ab;(-2a²)(1/3ab-5ab²)
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![(8a的三次方b-5a²b²)/4ab;(-2a²)(1/3ab-5ab²)](/uploads/image/z/1023515-35-5.jpg?t=%288a%E7%9A%84%E4%B8%89%E6%AC%A1%E6%96%B9b-5a%26%23178%3Bb%26%23178%3B%29%2F4ab%EF%BC%9B%EF%BC%88-2a%26%23178%3B%EF%BC%89%EF%BC%881%2F3ab-5ab%26%23178%3B%EF%BC%89)
(8a的三次方b-5a²b²)/4ab;(-2a²)(1/3ab-5ab²)
(8a的三次方b-5a²b²)/4ab;(-2a²)(1/3ab-5ab²)
(8a的三次方b-5a²b²)/4ab;(-2a²)(1/3ab-5ab²)
(8a的三次方b-5a²b²)/4ab
=2a² -5/4 ab
(-2a²)(1/3ab-5ab²)
=-2/3a³b+10a³b²