(1) 计算:
(2) 先化简,再求值:
,其中x满足x2-2x-2=0.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5cbe2bd278ee33923cabfbe8d25581a.png)
(2) 先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36ac794b53fcf21e1473978a284ed389.png)
更新时间:2020-04-01 16:48:40
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(3)先化简,再求值:
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(2)先化简,再求值:
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您最近一年使用:0次