Rational Expressions Flashcard

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Define a rational expression.

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A rational expression is a fraction where the numerator and the denominator are both polynomials.

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What is the domain of a rational expression?

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The domain of a rational expression is all real numbers except where the denominator equals zero.

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4, -4

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What is the first step in simplifying a rational expression?

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Factor both the numerator and the denominator.

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What is a common denominator?

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A common denominator is a shared multiple of the denominators of two or more fractions.

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The vertical asymptote is at x = 3.

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