(1)已知
,求
的值.
(2)已知
是方程
的一个根,试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a39527951b986701bcdcd31ad327f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad30f7e57a283a6a4bce8e0a6679be5.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bc722e040f761b7dd2d13a2017d8279.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/146a963aa8fd85b8c28dfccfc37cd0a5.png)
2011高一·安徽黄山·学业考试 查看更多[1]
(已下线)2011年安徽省屯溪一中理科试验班招生考试数学试卷
更新时间:2016-11-30 23:46:15
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【知识点】 根式的化简求值
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解答题-计算题
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适中
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【推荐1】化简求值(需要写出计算过程).
(1)若
,
,求
的值;
(2)化简
并求值;
(3)计算:
.
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/337b3db9e7d2e403299dc46e55b65d1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32ddda27016fdb7362a1b99cc2a4af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0113fd4c7d157757571f9a009e02af.png)
(2)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d5a71f404e390599aecbcdc52015bf.png)
(3)计算:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f952be0e921adb6730d65835562638cc.png)
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