(1)计算:
.
(2)计算:
.
(3)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d239b4d0d3032db4391d79d5b6a8063d.png)
(2)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70bf0103bb57cc2384c8924a979d854.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28d0d0e59df5861e416cc84e5567def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
20-21七年级下·天津·期末 查看更多[2]
更新时间:2021-07-05 20:56:40
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