Question

Radical expressions (inside)

Answer 1

http://puu.sh/70szu.jpg

Answer 2

you can take the cubed root of anything
answer is "all real numbers" or \(\mathbb{R}\) or \((-\infty, \infty)\) depending on your choice of notation

Answer 3

The for the first question, it's all real numbers?

Answer 4

yes, for both

Answer 5

Alright, awesome. I researched some more, I get it now. Thanks!