Simplifying Rational Expressions Level 1

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What is a rational expression?

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

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What does it mean to simplify a rational expression?

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To simplify a rational expression means to reduce it to its lowest terms by factoring and canceling common factors.

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What is the domain of a rational expression?

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The domain of a rational expression is the set of all real numbers except those that make the denominator equal to zero.

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How do you find excluded values in a rational expression?

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Excluded values are found by setting the denominator equal to zero and solving for the variable.

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3

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What is the first step in simplifying a rational expression?

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The first step is to factor both the numerator and the denominator if possible.

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What does it mean for a rational expression to be in lowest terms?

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A rational expression is in lowest terms when there are no common factors between the numerator and the denominator.

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