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更新时间:2021-09-17 18:08:10
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【推荐1】若等式
成立,则x的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9d4b85eb695a71a1d3c2a153f7fd02.png)
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【推荐2】化简:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec31c684c3f10c8f1659b83ec57b135.png)
__________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93740f1b9124a80942a43b3d2efaacbe.png)
___________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e76efd497e5a14cb31712aedf3811f4.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec31c684c3f10c8f1659b83ec57b135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93740f1b9124a80942a43b3d2efaacbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e76efd497e5a14cb31712aedf3811f4.png)
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