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负81的立方根是多少?
更新时间： 2021-02-15 10:50:36  

1、-4.3267487109222.

2、如果一个数的立方等于a，那么这个数叫a的立方根，也称为三次方根。也就是说，如果x3=a，那么x叫做a的立方根。

3、注意：在平方根中的根指数2可省略不写，但立方根中的根指数3不能省略不写。

关键词： 立方根 多少

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