(1)化简再求值:
,其中
.
(2)解分式方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d8a8518de3b067fc57251db0de0af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78f0f9ea5fbaf5ef0f979768b4dde09d.png)
(2)解分式方程:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7091603e32e8b874d06bf1c3b441aafc.png)
更新时间:2022-08-30 12:08:07
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解答题-问答题
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【推荐2】已知关于
的方程为:
……①,
.
(1)若方程①有两个不同的实数根,求
的取值范围;
(2)设方程①的两根分别为
,用
的代数式表示
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e92d1afc8cb1c508f0bc40eb9c34d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64adfe0985ede6b15903225cfc8df54a.png)
(1)若方程①有两个不同的实数根,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)设方程①的两根分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a85ec272c089ec7af1630dd10b42cb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21fb3c078d55d481142e52da59a02b09.png)
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