Adding two radical expressions by simplifying first

The video tutorial explains how to simplify expressions involving square roots by ensuring the radicands and roots are the same before combining terms. It demonstrates breaking down expressions into square numbers and terms, comparing the rewriting method with the factor tree method. The tutorial concludes by combining coefficients with the same radicand and root, resulting in a simplified expression.

Describe the process of rewriting expressions as square terms.

What is the result of combining the coefficients of 12X and 20X under the same radical?