计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ca16a9a0c13056eba34e8d3b42ac42.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31ca16a9a0c13056eba34e8d3b42ac42.png)
更新时间:2023-10-19 18:48:10
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【推荐2】数a、b、c在数轴上的对应点如图,化简|a|+|a+b|-|c|的值是_________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/6c1f433b-b178-49dc-af4a-f7808d4681f9.png?resizew=285)
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【推荐1】下列说法正确的有______________ .(选序号)
①若
,则
;
②若
,则满足条件
的值有3个;
③若
,则用含
的代数式表示
为
;
④已知关于
的方程组
不论
取什么实数,
的值始终不变.
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74308738abda449977d6d6e263e0531b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbbd0c87f33256eea5c4e44c8e375e6.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484e75c9c8f3203e98cbdd3d41235a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b37ec9e83f4f36523161621f527d056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8843ece347f3a51c1ee0c52ec6948338.png)
④已知关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1743e50d511a1af4083869743409e61c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0da83a3768f1e928118023d418062e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fc838e1477179b36ca7481ee2cc1e8.png)
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【推荐2】已知:(x﹣1)x+3=1,则整数x的值是_______ .
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