How to evaluate a radical of a perfect square rational number ex 6, root(1/25)

The video tutorial explains how to solve the problem of finding the square root of 120 divided by 5. It introduces a key rule for handling square roots of rational numbers, which allows the problem to be broken down into simpler parts. The tutorial then applies this rule to solve the problem step-by-step, ultimately arriving at the solution of 1/5. The video concludes by summarizing the process and reinforcing the understanding of evaluating perfect square rational numbers.

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