Algebra 2 - How to simplify the a radical with imaginary numbers, root(-45)

The video tutorial explains how to simplify radicals, especially when dealing with non-square numbers. It introduces the concept of square roots and the importance of simplifying radicals by factoring radicands using square numbers. The tutorial provides a detailed example of factoring the number 45 and addresses handling negative numbers in radicals, leading to the introduction of imaginary numbers. The lesson concludes with a summary of the key points covered.

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