已知x2-2kx+64是完全平方式,则常数k的值为( )
A.8 | B.±8 | C.16 | D.±16 |
更新时间:2017-06-23 21:42:03
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【知识点】 求完全平方式中的字母系数解读
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单选题
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适中
(0.65)
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【推荐1】已知
是完全平方式,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef3b58088f4c0127c5949965ca81e59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.3 | B.![]() | C.6 | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】在单项式
,
,
,
,
,
,
,
中任选三个作和,能组成完全平方式的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bea70753fc4cec65d3b60729ed60116.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a476588acbf41d798cc234a52fa21a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f30de9aa3515aad3beff48833648174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0e17b63a75587ae79fe51e29b44d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9737c6ca5a1165583e87c0f89f89dc41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634f275b3e833ab18f45931cdf1140c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911ac837c368a34d0498d52e067a8d9e.png)
A.4 | B.5 | C.6 | D.7 |
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