下列运算正确的是( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2019年陕西省蓝田县育才学校中考数学一模试题【万唯原创】河南省2020年中考数学-逆袭卷-特训4-6(已下线)【万唯原创】2020年陕西-试题研究-选填题组特训1福建省泉州市泉州实验中学2020-2021学年九年级下学期期中数学试题2024年海南省九年级数学中考模拟试题
更新时间:2021-09-19 19:51:39
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【推荐2】下列各式:①
;②
;③
;④
;⑤
,其中计算正确的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2389b3290ec1c34df67fc52a24db5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b9a421aaa9a9a1fbeafa1387ebb3d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130e91466c9ee08f38f865df29054c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fcc9a1834c2aae5525013edde01da8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bea1505ed88d7451b833fa811d49754.png)
A.①③④ | B.①③⑤ | C.③⑤ | D.②③⑤ |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐1】下面是某同学在一次测验中的计算摘录
,
,
,
,
,
,其中正确的个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3e7cf79a6da0a1511cf4ee304f509df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff1e9a434485b7eb322ab988dad37e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad8acb4392112b124b783f0394f0bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f6528b3b41c91eb1bf38397c46ba200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8b8d11beee14fa2bf7183dfec08288c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b72ddee91749087f0f3cd77103b1da2.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐1】下列各式中,不能用完全平方公式分解的个数为( )
①
;②
;③
;④
;⑤
.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/469cd86028e9f04dbbdd98ade3a29fb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9e7b93ba5a21152b2d7032e88ec3034.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7841e6c4f3ca7bdc23e807edee85c562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ac5c032e70eb6780474619c6a8360b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5837761831b60d7b2a07733e03065f02.png)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次