若
是方程
的两个实根,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3305d1c8113b05f687399db072bb40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b17755cc4b20f1c5abf78526fc34f0b.png)
2016高一·全国·课后作业 查看更多[2]
更新时间:2017-11-27 15:53:07
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适中
(0.65)
名校
【推荐2】计算:
(1)已知
,求
的值.
(2)已知
,求
的值.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bbe7ea044718fb7c2c7774f89bc5d5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06600ad133ade8fd4b0d561db38faac0.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b0511ce545a00a278fbebb2b6202fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b50bf3bbcb3dfb50cc130197e10b67.png)
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