计算:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06b8d1dd93f064d549048b974212ca8f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c75a62675fe2c38a9f1e3caa55362f.png)
更新时间:2024-03-14 09:51:46
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【推荐2】已知a+1的算术平方根是3,﹣27的立方根是b﹣12,c﹣3的平方根是±2.求:
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【推荐1】求下列各式的值:
(1)
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;
(2)-32+|
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;
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa89e61cb668687bda59caf6ce89e67.png)
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【推荐2】王老师在黑板上写了一道题目,计算:
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解:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314243755d99d4fa58d7e0d024220a7c.png)
①
②
③
④
(1)上述计算过程中,哪一步开始出现错误?______;(用序号表示)
(2)从①到②是否正确?______;(填“是”或“否”)若不正确,错误的原因是______;
(3)请你写出此题完整正确的解答过程.并求出当
时的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314243755d99d4fa58d7e0d024220a7c.png)
解:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314243755d99d4fa58d7e0d024220a7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ef4ed823817fc7375ecca7d204e48d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f9a9c1ea6671a567a322d8d645e2d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/384a6a1abba73e9576ea66efbe9f6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca5d2ab83338d4f2a5d9e0eeda9fa6b.png)
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(3)请你写出此题完整正确的解答过程.并求出当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f0223e81b8ef99b25b6ebff51d402d.png)
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