解方程或不等式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00d766dc814f0699a79f504fd241996a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5c15268741bed02dc179a0e3e6a422.png)
更新时间:2023-08-03 11:37:08
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【推荐1】已知关于
的一元二次方程
有两个实数根.
(1)求
的取值范围;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7dc918ddef047723bb42c090beff70.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e0279dd62c61a41e900b0d1e5ae14e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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