计算:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae154ab0584df68b028060d269185ded.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae154ab0584df68b028060d269185ded.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0b2619586468f58a9b70d2f7edc920.png)
更新时间:2022-04-09 22:42:49
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解答题-计算题
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适中
(0.65)
【推荐2】(1)计算:
①
;
②
;
③
.
(2)先化简,再求值:
,其中
,
.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/674367ec30dafdedfff9b62595aea3b8.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e421fe45548c02ed6200dfb4594199df.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b23c4ef8562c410fa0934d9a4c664e.png)
(2)先化简,再求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8e2b5b78554f2c8c046e4054d46096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03eb8e6fa55f350635315da9ae4550de.png)
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