Math tutorial for combining radical expressions by simplifying first

The video tutorial covers factorization using a factor tree method. It demonstrates breaking down numbers into their prime factors and simplifying expressions involving square roots. The instructor explains how to simplify terms by taking square roots of pairs and combining like terms to achieve a final simplified expression.

Explain how to simplify the expression involving square roots as mentioned in the text.

What is the final result of the expression involving square roots as discussed?