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Define 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 is the first step in adding rational expressions with different denominators?

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Find a common denominator for the rational expressions.

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How do you divide rational expressions?

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Multiply by the reciprocal of the divisor.

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What is the process for subtracting rational expressions?

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Find a common denominator, rewrite each expression, and then subtract the numerators.

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How do you multiply rational expressions?

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Multiply the numerators together and the denominators together.

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