中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.若关于
的方程
没有实数根，则
得取值范围是______.
的方程没有实数根，则得取值范围是______. A:  |
B:  |
C: |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5b2T5Yik5Yir5byPPGltZyB3aWR0aD0yNDYgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQUMvckJBQ0psVEltX19EakM2UUFBQURxamM5bWxVMjUzLnBuZyI+
- 答案：Qg==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.关于的一元二次方程
的根的情况是()
的根的情况是() | A: 有两个相等的实数根 |
| B: 有两个不相等的实数根 |
| C: 没有实数根 |
| D: 无法确定 |
一次做对，真牛！
+5奖励规则>
- 提示1：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
- 答案：Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.下列方程中，没有实数根的是_____
A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5oqK5LiA5YWD5LqM5qyh5pa556iL5YyW5oiQ5LiA6Iis5byP5Li6PGltZyB3aWR0aD0xNDkgaGVpZ2h0PTIxIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQUEvMkIvckJBQ0ZGVEltX3ZTOEdCSkFBQUN6UWs3TmFBNzAyLnBuZyI+5b2i5byP
- 提示2：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
- 答案：RA==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.方程
的根是（）.
的根是（）. A:  |
B:  |
| C: 无实根 |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：5Yik5Yir5byP55qE5bqU55So
- 提示2：5LiA5YWD5LqM5qyh5pa556iL5rGC5qC55YWs5byP5Li6PGltZyB3aWR0aD0xMzYgaGVpZ2h0PTYyIHNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQUMvckJBQ0psVEluQVBoWmYyZUFBQURPNmZTSUtFMzQ0LnBuZyI+
- 答案：RA==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.若关于y的一元二次方程ky2-4y-3=3y+4有实根,则k的取值范围是( )
一次做对，真牛！
+5奖励规则>
- 提示1：5LiA5YWD5LqM5qyh5pa556iL55qE5a6a5LmJ
- 提示2：5Yik5Yir5byPPGltZyB3aWR0aD0zMTMgaGVpZ2h0PTQyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvM0UvQUMvckJBQ0psVEluSURCcW03YUFBQUVtRHJwejhzNDY4LnBuZyI+
- 答案：
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
