2a倍根号3ab²-b/6根号27a³+3ab倍根号a/3 （b大于0）
人气：331 ℃ 时间：2019-10-31 14:35:52
解答
2a倍根号3ab²-b/6根号27a³+3ab倍根号a/3
=2ab√3a-ab/2√3a+ab√3a
=5ab/2 √3a
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