若
与
互为相反数,且
是方程
的解,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8910fb159632e0893a7cb4fbb2d8b8da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eff243487fdcebe811af3f8b8ed2f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba31f0be3595f7550dd2a19166ea8ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.1 | B.![]() | C.4 | D.![]() |
更新时间:2024-03-06 21:04:14
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【推荐1】
的绝对值的相反数的倒数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1be81639e6a3bfe3694e4af93a510e.png)
A.![]() | B.1 | C.2020 | D.![]() |
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【推荐2】已知有理数
,则下列判断中:①
是正数;②
是负数;③
与
互为相反数;④
与
必有一个为正数;⑤
.正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5060ad37c403f248c937c1d59af5c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5060ad37c403f248c937c1d59af5c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5060ad37c403f248c937c1d59af5c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfd305bd97327fe620dbca4f292f964.png)
A.2 | B.1 | C.3 | D.5 |
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【推荐1】下列变形正确的是( )
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若方程![]() ![]() |
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【推荐2】如图,正方形ABCD的边长为8,将正方形折叠,使顶点D落在BC边上的点E处,折痕为GH.若BE=EC,则线段CH的长是( )
![](https://img.xkw.com/dksih/QBM/2020/11/9/2588981944459264/2604946443853824/STEM/96abc732f4fd4eae8ef08949d858ffcc.png?resizew=143)
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A.3 | B.4 | C.5 | D.6 |
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