How to apply simplifying radicals to large digits

The video tutorial explains how to simplify radicals by identifying square numbers and rewriting the number under the radical as a product of these numbers. The process involves dividing the number to find factors that are perfect squares, simplifying the expression, and multiplying numbers outside the radical. The tutorial emphasizes the importance of starting with the largest square number and provides a step-by-step approach to achieve the final simplified form.

Discuss the importance of keeping track of numbers outside the radical when simplifying expressions.

What is the final expression when simplifying the radical sqrt(245) as discussed in the lesson?