How to determine the domain of the sum of two functions

The video tutorial covers the process of adding functions, emphasizing the need for like terms and common denominators. It explains how to simplify expressions by rewriting them with a common denominator and demonstrates combining fractions. The tutorial also delves into identifying the domain of functions, highlighting restrictions such as division by zero and square roots of negative numbers. The instructor provides examples and clarifies domain constraints, ensuring students understand how to determine valid input values for functions.

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