Simplifying a radical expression with four radicals, root(5)+root(20)-root(27)+root(147)

The video tutorial explains how to simplify radical expressions by using the golden rule, which involves expressing numbers as square numbers to cancel out radicals. It provides examples of simplifying radicals like radical 5 and radical 20, and demonstrates how to combine like terms in radical expressions. The tutorial emphasizes careful organization and understanding of the process to achieve accurate results.

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