若
,则x的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b58bd36929e42035bf9ea953d509eb5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2021-03-24 08:12:34
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【推荐1】a的取值范围如数轴所示,化简
的结果是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/1a7e4128-f674-4f7e-8344-1499b5837ed5.png?resizew=193)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aad975420b4ee87024f458631293fa4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/1a7e4128-f674-4f7e-8344-1499b5837ed5.png?resizew=193)
A.a﹣2 | B.2﹣a | C.a | D.﹣a |
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【推荐2】有理数a,b,c在数轴上对应的点的位置如图所示,则下列各式正确的有( )
①
;②
;⑧
;④
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/1061bfa7-2b1a-4813-959a-a065dadcf2d9.png?resizew=277)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23448f931109cdadc55891d82a98b938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1dd777773bc9b0800a8d8755243230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5724fbe1db735c0b774187eafb4336b4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/30/1061bfa7-2b1a-4813-959a-a065dadcf2d9.png?resizew=277)
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐1】实数a在数轴上对应点的位置如图所示,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b8df099ad7f6ef8b5ad3bf47121fcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/21/7b3fca53-172c-48c3-90e3-7cc5a1083cb1.png?resizew=170)
A.2 | B.![]() | C.![]() | D.![]() |
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