(\frac{a²}{a-2}-\frac{4}{a-2})•\frac{1}{a²-2a}
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/21 13:07:40
![(\frac{a²}{a-2}-\frac{4}{a-2})•\frac{1}{a²-2a}](/uploads/image/z/14764258-10-8.jpg?t=%EF%BC%88%5Cfrac%7Ba%26%23178%3B%7D%7Ba-2%7D-%5Cfrac%7B4%7D%7Ba-2%7D%EF%BC%89%26%238226%3B%5Cfrac%7B1%7D%7Ba%26%23178%3B-2a%7D)
(\frac{a²}{a-2}-\frac{4}{a-2})•\frac{1}{a²-2a}
(\frac{a²}{a-2}-\frac{4}{a-2})•\frac{1}{a²-2a}
(\frac{a²}{a-2}-\frac{4}{a-2})•\frac{1}{a²-2a}
原式=[(a²)/(a-2)-(4)/(a-2)]·(1)/(a²-2a)
=(a²-4)/(a-2)·(1)/(a(a-2)
=(a-2)(a+2)/(a-2)·(1)/(a(a-2))
=(a+2)(a²-2a)
供参考
不太好认啊