更新时间:2019-12-24 15:46:47
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解答题-计算题
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适中
(0.65)
【推荐1】(1)计算:
.
(2)解不等式
,并把解集在数轴上表示出来.
![](https://img.xkw.com/dksih/QBM/2019/8/3/2260597423235072/2263229769719808/STEM/34a6e71671404132ba802a50a8e6cd07.png?resizew=346)
(3)解方程组:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a191606b6fa31e9a0bf27ee308b4eb3.png)
(2)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d53b2fb8a2d15af1f9903a0765345f30.png)
![](https://img.xkw.com/dksih/QBM/2019/8/3/2260597423235072/2263229769719808/STEM/34a6e71671404132ba802a50a8e6cd07.png?resizew=346)
(3)解方程组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43dd3f1d9ea8ace9d18d8c5cf0422c62.png)
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