1 . 解分式方程
时,去分母化为一元一次方程,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88649dfe2d9cc2c78b7832170f03171e.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 对于二次函数
,下列结论中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7a6d0032f9161eccda678c0d1d9d79.png)
A.它的对称轴是直线![]() |
B.设![]() ![]() ![]() ![]() |
C.它的图像与![]() ![]() ![]() |
D.当![]() ![]() |
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解题方法
3 . 已知当
时,二次函数
的值恒大于
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b402181e8e0ec843d3d7f441e35bd28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b8d3b43d97ca7c52a2c199b1dbbd90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 分解因式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d86823069705a4eb69f0bbdbfdd313.png)
_________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d86823069705a4eb69f0bbdbfdd313.png)
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5 . 若关于
的方程
两根异号,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99aaea5595db1e5a12c8a1113cfffe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-09-23更新
|
124次组卷
|
3卷引用:福建省漳州市南靖县某校2022-2023学年高一上学期开学考试数学试题
6 . 若关于
的方程
有两个实数根
,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591cddf7ceb53189ff772a6f345563f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb691a7e580efba52d97a7f1ca8c9153.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 下列因式分解中错误的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-09-23更新
|
230次组卷
|
2卷引用:福建省漳州市南靖县某校2022-2023学年高一上学期开学考试数学试题
8 . 如图,
中,
,
分别为边
,
的中线,
,若
,
,则
的面积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/44ea47c4-7c30-4b0f-9873-58343bb38132.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509d8dd6031dc0ef92075877e53fe201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8832c5450a61500ccbf73d95e16f449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/44ea47c4-7c30-4b0f-9873-58343bb38132.png?resizew=138)
A.20 | B.16 | C.15 | D.10 |
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名校
9 . 若关于
的一元二次方程
的两个实数根分别是
,
,且满足
,则
的值不可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94016dc7644b0058d56f37e6691cfff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e7259141541c141810913537800f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-09-23更新
|
123次组卷
|
3卷引用:福建省漳州市南靖县某校2022-2023学年高一上学期开学考试数学试题
10 . 计算
(1)解方程:
;
(2)解分式方程:
.
(1)解方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6e1217f1a47a31fde4ef8b6f403dd8.png)
(2)解分式方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d5ce69923d03b4b17b9c68b48cdd01.png)
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