若
+
=
,则
的值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec40a631644774ae7771d9d325e08ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2254c252cb9dde6303a508e769cbb29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96187825b08503f8e22b1bf92309d422.png)
更新时间:2021-11-21 08:37:14
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【推荐1】已知实数
、
满足
,若关于
的一元二次方程
的两个实数根分别为
,则
的值为___
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd489d88d4584293236f877222fe6de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1146110d4382c714c10de00dd1273b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff60eab72de85437e12806474281612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3542fb77032c945b6cffe650968f2af9.png)
您最近一年使用:0次
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较易
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【推荐2】计算
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecff802fe1cd83a429af9457905ba334.png)
________ ;(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470db82bb6da163cdf189082af32e7b6.png)
________ ;(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee178018ebd8e46e9da71e0938081a7.png)
________ .
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecff802fe1cd83a429af9457905ba334.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470db82bb6da163cdf189082af32e7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee178018ebd8e46e9da71e0938081a7.png)
您最近一年使用:0次