Question

How do you simplify `root5(1215)`?

Answer 1

`3 root5(5)`

Explanation:

Write `1215` as the product of its prime factors. Then you know what you are working with.

`root5(1215) = root5(5xx3xx3xx3xx3xx3)`

Find fifth root where possible:

`root5(3^5 xx5) = 3 root5(5)`