Query about Question 1 from "PrepSwift: Roots and Negatives" [3496]

GRE GRE Quant Problem Solving
1

https://www.gregmat.com/quizzes/quiz/prepswift-roots-and-negatives (Question 1)

Why is the 3rd root of a negative number real, but the 4th root is not?

2

Because the cube of a negative number is negative; that is not the case for the 4th power however.

3

Thank you
What’s the 4th power in that case?

4

The 4th power of a non-zero number is always positive.