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Multiplying and Dividing Rational Expressions - Problem 7

Teacher/Instructor 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

As with any fractions, dividing is the same is multiplying by the reciprocal. We leave the first fraction the same, invert the second fraction, and multiply. Here we're working with polynomials, so factor everything and cross out any common factors in tops and bottoms. Domain restrictions are any values of variables that would make any denominators equal to zero, since dividing by zero is undefined.

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