Question

find the cube root of a complex number z = -8​

Answer 1

-2 is the correct ans.

-2 ×-2×-2= -8

Answer 2

$z = - 8$

$\implies \sqrt[3]{z} ^{ \neg} = surd [z,3] \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = - 2 \: , - 1 \pm \sqrt{ - 3}$