# Chapter 10 - Radical Expressions and Equations - 10-2 Simplifying Radicals - Lesson Check - Page 623: 9

#### Work Step by Step

To see if a radical is in simplified form, we see if any of its factors are perfect squares (which means that their square root will be an integer). Consider $\sqrt 12$. It has factors of 3 and 4. 3 is not a perfect square, but 4 is. Thus, we know we can simplify $\sqrt 12$ to $2\sqrt 3$.

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