1 . 先分解因式,再求值:
,其中
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee061e791dcda07317682f6351f65747.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d599059e6b2c918ab15ee22611b6962.png)
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2 . 利用分解因式方法计算:
(1)
;
(2)29×19.99+72×19.99+13×19.99-19.99×14.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b25d65a0d86be902fc290a9c4467bf.png)
(2)29×19.99+72×19.99+13×19.99-19.99×14.
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3 . 把下列各式因式分解
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822148d28e7adb61e4bb76b8abf7bf8e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3652325f0624fb462c3500c138462fe0.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1962253aeda4b40b5a989c6d81e3bea8.png)
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4 . 如果多项式
可分解为
,则
代表的单项式为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82294cae4ada1eea078abdebe8a8ce05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a264ce179b532ac7f786a944371452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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5 . 在等式
中,当
,
,
,
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad83973d1361b2928c7e783ffd073b75.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f965de2e02d4d9d7c83f1da5bc9a95df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f942f39b4e7acc46c70d656262f46e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28f0e73c6812df1d219fbf51848aaf4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/466221c263c04de4abe8775eeb6bea9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74d346d64b8633c74f4fe0eea0308a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad83973d1361b2928c7e783ffd073b75.png)
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6 .
能被下列数整除的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9cae9e004f60bd847e366e69f919da.png)
A.3 | B.5 | C.7 | D.9 |
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7 . 把
分解因式( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9b1bfee253cace4a2db5e642c6a0c5.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 因式分解:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700b0fa6c36ac52e8361a6c2131ea541.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700b0fa6c36ac52e8361a6c2131ea541.png)
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9 . 把
分解因式,结果是
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96aa8ae540b91674fba85bc680180a17.png)
![](https://img.xkw.com/dksih/QBM/2023/5/11/3235649101668352/3238119968686080/STEM/dab5c741b1d847459c03ad11eb0c7520.png?resizew=4)
A.![]() | B.![]() |
C.![]() | D.![]() |
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10 . 下列多项式因式分解:
①
;②
;③
;④
,其中正确的有( )
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2aa6bbb94e5a62d048a29a2c7538da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/583d4eee115f108a9e69a91cf404a804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20711fb6f46f20dffdf97972a28fd0ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09ee1232233d4261e07b74dff3f482d9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-15更新
|
237次组卷
|
5卷引用:鲁教版(五四制)八年级数学上册第一章 因式分解 单元测试卷-