51问答网 > 三根号负二十七的绝对值该如何算，要详细的演算过程

三根号负二十七的绝对值该如何算，要详细的演算过程

2025-03-15 01:32:54
推荐回答（5个）
回答1：

-27开3次方理论上有3个根
1，-3
2，-3e^j2pi/3=-3(cos2pi/3+jsin2pi/3)
3,-3e^j4pi/3

这3个跟的绝对值和模都是3，如果你学过复数运算就能看懂。

回答2：

│（-27)^(1/3)│=│[(-3)^3]^(1/3)│
=│-3│=3

回答3：

│(-27)^1/3│=│-3│=3

^1/3表示某数的三分之一次方

回答4：

³√|-27|
=³√27
=³√(3)³
=3

回答5：

3√|-27|=3√27=3*3√3=9√3

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