Chapter 10 - Radical Expressions and Equations - 10-2 Simplifying Radicals - Practice and Problem-Solving Exercises - Page 624: 52

Yes

We see if any of the factors of a radical are perfect squares (meaning that their square root will be an integer) to see if the radical is in its most simplified form. The only factors of 5 are 5 and 1, which are not perfect squares, so we know that this is in its most simplified form.