Learn how to rationalize denominator when radicand is a binomial

The video tutorial explains how to rationalize a radical expression by multiplying by X^2 - 4. It demonstrates the process of simplifying the expression using the difference of two squares, resulting in a final expression of sqrt(X^2 - 4) / (X + 2). The tutorial emphasizes the importance of rationalizing the denominator and provides a step-by-step guide to achieve this.

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