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3√8等于多少
更新时间: 2020-10-03 00:00:00  

如果一个数的立方等于a,那么这个数叫做a的立方根或三次方根。这就是说,如果x的三次方等于a,那么x叫做a的立方根。所有实数都有三次方根。

因为2的三次方等于8,所以2是8的三次方根。常见的有0的三次方根为0,1的三次方根为1,-1的三次方根为-1。

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