1 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09477067a4bd15d72e520f39a0fbb6ed.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09477067a4bd15d72e520f39a0fbb6ed.png)
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2 . 先化简,再求值:
,其中x、y满足
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03801be137b45377cfbb9397b282ff37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f2e0d4b3f3e80ac19cdc39c839cd45.png)
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3 . 计算:
(1)
;
(2)
;
(3)
;
(4)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f5df4c953379c705c9b332d7e9f89d8.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d3f8b9e1e4731f3515332e91ccaf19.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/032bd67b3b40fc1f2ee8b40b5beecfcf.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ec10994fd626ba877ced9099db6e38.png)
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4 . 对于任意自然数n,代数式
一定能被一个整数整除,那么这个整数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664eb01cc4f85d4e63799aacf9a9cb51.png)
A.4 | B.5 | C.6 | D.12 |
您最近一年使用:0次
2023-11-02更新
|
172次组卷
|
2卷引用:四川省乐山市井研县井研县研城中学2023-2024学年八年级上学期10月月考数学试题
5 . 若规定符号
的意义:
.
(1)计算:
_________.
(2)若
,
,则
的值为________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b29320f184b4027471a2951527457453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9fec025453bac0d34d5e9bdf61a6755.png)
(1)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4b8fb79ddf256c5189a24e4263cd8e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c385da151d713c101dba3a78786d838c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50b947ef013b47782f5d77523fa49167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75a253f6372ac902820105817ea65088.png)
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6 . 计算
(1)
;
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59d9f47c2e8eb95866cadead7477e05.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19c79ccc5d34d65e313d31922aac3b9.png)
(4)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f1fc8ee6cbdfeb07a87d18b3a35a50e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59d9f47c2e8eb95866cadead7477e05.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19c79ccc5d34d65e313d31922aac3b9.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff0134fbcfe08c39f8dce467e39e946.png)
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2023-09-03更新
|
222次组卷
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3卷引用:四川省成都市教育科学研究院附属实验中学2022-2023学年七年级下学期期中数学试题
四川省成都市教育科学研究院附属实验中学2022-2023学年七年级下学期期中数学试题江苏省镇江市镇江新区2022-2023学年七年级下学期期中数学试题(已下线)考题猜想05 七年级期中必刷题(易错必刷70题25种题型)-2023-2024学年七年级数学下学期期中考点大串讲(苏科版)
7 . 将
表示成一个自然数的平方,则这个自然数是 ________ ;若从一个正整数a开始,连续的四个整数的积再加上1,也可以用一个自然数的平方表示所得结果,即
,其中a为正整数,那么这个自然数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5334f14a8f796220358a5f2c04d48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0f85fc367890966f8ce60c11b8eae7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
您最近一年使用:0次
名校
8 . 若实数
、
满足
,则代数式
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07f1cc16e3a81f690474f9418453fd46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13de5ab7e9e23632896cfd02654f9f80.png)
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2023-07-26更新
|
138次组卷
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2卷引用:四川省成都市双流区成都棠湖外国语学校2022-2023学年八年级下学期期中数学试题
9 . 先化简,再求值:
,其中
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ad674a43b0da83cbcb1d9e564db571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07123fa58c0f1118f75132fbb6ac991d.png)
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名校
10 . 对于五个整式,
:
;
:
;
:
;
:
;
:
有以下几个结论:
①若
为正整数,则多项式
的值一定是正数;
②存在有理数
,
,使得
的值为
;
③若关于
的多项式
(
为常数)不含
的一次项,则该多项式
的值一定大于
.上述结论中,正确的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2564899e9403e844ca5fcc5aa82a61cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b5a9de8a72dda70e3eefeb0a408ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0e71978def5c27b89988665648a2d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a476588acbf41d798cc234a52fa21a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f8481c483bb605f505414fde3c6a8d.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32ded360cf1211c7a2d6c204f5e9c861.png)
②存在有理数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4a73cd2008d2a5eefd6ffd00a16173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
③若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a83b076321167b1809ae81570ad5e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
A.0 | B.1 | C.2 | D.3 |
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2023-08-23更新
|
691次组卷
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4卷引用:四川省眉山市仁寿县城区2023-2024学年八年级上学期期中考试数学试题