6ab²分之a-9b-9a²b分之a+3b
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/06 00:32:15
![6ab²分之a-9b-9a²b分之a+3b](/uploads/image/z/13296861-45-1.jpg?t=6ab%26%23178%3B%E5%88%86%E4%B9%8Ba-9b-9a%26%23178%3Bb%E5%88%86%E4%B9%8Ba%2B3b)
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6ab²分之a-9b-9a²b分之a+3b
6ab²分之a-9b-9a²b分之a+3b
6ab²分之a-9b-9a²b分之a+3b
原式=[3a(a-9b)-2b(a+3b)]/18a²b²
=(3a²-27ab-2ab+6b²)/18a²b²
=(3a²-29ab+6b²)/18a²b²