Simplify a rational expression by factoring trinomials

The video tutorial explains how to handle expressions with terms separated by addition and subtraction, which cannot be simplified using the rules of exponents. Instead, factoring is applied to transform the expressions into a form where multiplication allows for simplification. The tutorial covers the factoring technique, using a * C over B, and demonstrates how to apply it to trinomials in both the numerator and denominator. It also discusses the division property and constraints, emphasizing that certain values for X cannot be used as they would result in division by zero.

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