(1)计算:
;
(2)解不等式组:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb0a09cc21d47581f61fd4d8c8a829d.png)
(2)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2539f19ef4775822fb37d076f716e7f.png)
更新时间:2016-12-06 13:07:52
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