Query about Question 3 from "PrepSwift: Real Number Properties II" [3469]

https://www.gregmat.com/quizzes/quiz/prepswift-real-number-properties-ii (Question 3)


If a and b are negative integers, how and why is a^b not always negative?

I don’t get this despite reading the previous answers. Could you please explain it again?

(-1)^{-2} = \frac{1}{(-1)^2} = 1