Domain of a rational function by factoring

The video tutorial explains how to determine the domain of a function by focusing on when the denominator equals zero, as the numerator's continuity does not affect the domain. It covers factoring quadratic equations to find values that make the denominator zero, rendering the function undefined. The tutorial also demonstrates how to represent the domain using a number line and the union symbol, emphasizing the importance of understanding these concepts for solving equations.

Describe the process of factoring a quadratic trinomial.

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How do you express the domain of a function using interval notation?

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