-243^1/5
Simplify the rational exponent:
-2431/5
ab/c = (c√a)b
Take the cth root of a
Then raise that to the power of b
In this case, a = -243, b = 1, and c = 5
5√-243 = -3 since -35 = -243
as seen in our Exponent Lesson
Therefore, we can write -2431/5 = -3