**Assume all variables are positive.**)

**Perform the operations.**

Be sure to follow the correct order of operations.

**Simplify.**

Simplifying is a challenge for many students. In particular, the numerical part is the source of confusion. It is much easier to deal with the prime factors of the number in a radical than it is with the number itself. Create a factor tree and determine the prime factorization of all numbers before simplifying radical expressions.

**Simplify:**

**Simplify.**

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