Nothing shows up for me, NSS !!!
I was expecting problems, RP...but I see that they are just questions
The input value is put into one function and evaluated. Then, this result is put into a second function and the result of this is the output.
12. To give a simplistic answer, if the prime factors and variables under the radicand have individual powers on them that are less than the index of the root, it is fully simplified.