解方程组
(1)
; (2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70120fb20b929607382e2c183e2c1b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67d0b387588b5757b58e34c581d9786.png)
更新时间:2021-08-18 14:22:50
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解答题-计算题
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较易
(0.85)
【推荐2】计算
(1)已知
的算术平方根是2,
的立方根是
.求a,b的值;
(2)某正数的两个平方根分别是
和
,b的立方根是
,求
的值.
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4c0046ba6bdb9bfc0257dc5d5b76d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d85c6fc20b328e75459802f9dcaa05e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e393cbdb88845fa1aafca2a8bf19fe3.png)
(2)某正数的两个平方根分别是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eede3324487b8ce61df283b111964038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b3494366589b3689a839c975724e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17ca1e04c68f59bddc675411a0ea2fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/498a9fe2114c4c77e7c3768405a79cd1.png)
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