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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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How do you divide rational expressions?

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To divide rational expressions, multiply the first expression by the reciprocal of the second expression.

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What is the reciprocal of a fraction?

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What is the first step in adding rational expressions with the same denominator?

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Combine the numerators over the common denominator.

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What is the formula for multiplying two rational expressions?

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How do you simplify a rational expression?

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Factor the numerator and denominator and then cancel any common factors.

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What is the least common denominator (LCD)?

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The least common denominator is the smallest expression that can be used as a common denominator for two or more fractions.

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