下列计算正确的是( )
A.![]() | B.![]() | C.![]() ![]() | D.![]() |
更新时间:2021-11-10 10:59:31
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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】a在数轴上的位置如图所示,则
化简后为( )
![](https://img.xkw.com/dksih/QBM/2019/8/4/2261688931311616/2263021644038144/STEM/d83059cedd6a4f5592768c648726e6c3.png?resizew=178)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5d58ac63aa00f8ddc32d1eb083fa14.png)
![](https://img.xkw.com/dksih/QBM/2019/8/4/2261688931311616/2263021644038144/STEM/d83059cedd6a4f5592768c648726e6c3.png?resizew=178)
A.5 | B.﹣5 | C.2a﹣9 | D.2a+5 |
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