Subtracting a radical expression

The video tutorial explains how to simplify radical expressions by identifying and combining like terms, similar to combining variables in algebra. It demonstrates the process using the example of simplifying expressions with sqrt 8, showing how to rewrite and simplify radicals. The tutorial emphasizes the importance of simplifying radicals as much as possible and concludes with a final simplified expression.

What is the result of simplifying the expression -5sqrt(8) - 2sqrt(8)?

Describe how to rewrite sqrt(8) in terms of simpler radicals.