已知关于x的一元二次方程
.
(1)求证:该方程总有两个实数根;
(2)若该方程恰有一个实数根为非负数,求m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b027dce7f6ae730f710876287c1c8e11.png)
(1)求证:该方程总有两个实数根;
(2)若该方程恰有一个实数根为非负数,求m的取值范围.
更新时间:2023-11-06 19:14:31
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【推荐1】设
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②当
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④当
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(1)尝试:
①当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9261ce7c2e5e38e511b7a69fb0933d0b.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
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③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
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④当
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(3)运用:若
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【推荐1】解下列不等式(组),并把解集在数轴上表示出来.
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(2)
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