###### Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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# Multiplying and Dividing Rational Expressions - Problem 4

Alissa Fong
###### Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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In math, dividing by zero is undefined. Since a fraction represents a quotient, any value for a variable that would make the denominator of a rational expression zero is an excluded value, or a value that is restricted in the domain. To find theses restricted values, we factor the denominator(s), set each factor equal to zero, and solve for x.

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