已知2a-1的算术平方根是3,3a+b+4的立方根是2,求a-b的平方根.
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更新时间:2018-06-18 21:54:48
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适中
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【推荐1】如图,在平面直角坐标系中,O为坐标原点.
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
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(3)过
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适中
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【推荐2】(1)
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【推荐1】已知
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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