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