# How do you simplify the radical expression #sqrt72#?

##### 2 Answers

Mar 20, 2017

#### Explanation:

This takes advantage of the relation

Look for a factor in the original value that is a perfect square (4, 9, 16, 25, 36, etc.)

Mar 20, 2017

#### Explanation:

(I think you meant as a simplified radical, so that's what I'm going to answer.)

Using the rule that

This can also be expressed as

The square root and square cancel, leaving us with the simplified radical of