先阅读解不等式
的过程,然后完成练习.
解:
,
.
两式相乘,异号得负,
或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154c5974919a37f86667e9ef48a6dfa1.png)
解得
(舍去)或![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edb599ce2cbec32b8b40760b246527e.png)
不等式
的解集为
.
练习:利用上面的信息解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1abceaf05f077441d5935047d8c84d3.png)
解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a34f697cbd1c492a4fe53e2fcd5e837e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f836cb210093634b7f2126e55e101179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16f3d198e76391779fa3badc848c8ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0000fb4339ce0d3a2748ccf16bc2ad66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/154c5974919a37f86667e9ef48a6dfa1.png)
解得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea44af709755a7b99a660143f74d83c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0edb599ce2cbec32b8b40760b246527e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2de0d10ef8b748d4531250c37c5d3f9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1abceaf05f077441d5935047d8c84d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e5424cbcc3bc37a62e6af0f3a11fe3.png)
练习:利用上面的信息解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8ea9d543c9d654fa21bbdfa3a476a32.png)
22-23八年级下·全国·假期作业 查看更多[1]
(已下线)YHmlsjsxBS815 .pdf
更新时间:2023-12-27 07:35:06
|
相似题推荐
解答题-计算题
|
较易
(0.85)
【推荐1】计算:
(1)计算:
;
(2)解不等式组
,并在数轴上画出该不等式组的解集.
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b14fbc42ed0328bccfc74ff780ba2c86.png)
(2)解不等式组
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d5093a1fcce571d214f75392a71daf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/ee1db1d1-00a5-4093-ad2d-72c2c04a128b.png?resizew=190)
您最近一年使用:0次