下列运算中,计算正确的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2021-05-12 19:16:29
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【推荐1】下列命题中,是真命题的是( )
A.![]() | B.5是25的一个平方根 |
C.![]() ![]() | D.64的立方根是![]() |
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【推荐1】已知实数
,
,
,
,
,
,且
,
互为倒数,
,
互为相反数,
的绝对值为
,
的算术平方根是8,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9b1fdd2b93e2f159152a8bd1d0ae49.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】在0.458,4.2,
,
,
,
,这几个数中无理数有( )个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/746b05d38f3aed968258c8c674b45b98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a95d0e433b8834a67327e75827fd336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1985174e05ad371e13cf24d244423da4.png)
A.4 | B.3 | C.2 | D.1 |
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【推荐2】下列计算正确的是( ).
A.(2m2)3=2m5 | B.a2+a2+a2=a6 |
C.-(n2)2=n4 | D.2x•5y=10xy |
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