Adding two rational expressions with trinomial denominators

The video tutorial covers the concept of finding the least common multiple (LCM) in algebraic expressions, starting with basic numbers and variables. It progresses to factoring trinomials and rewriting expressions to find the LCM. The tutorial explains how to multiply and combine terms, apply the distributive property, and simplify expressions to reach the final answer. The instructor emphasizes the importance of using the least common multiple to avoid unnecessary simplification later.

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