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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 add rational expressions with different denominators?

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To add rational expressions with different denominators, find a common denominator, rewrite each expression with that denominator, and then combine the numerators.

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What is the first step in subtracting rational expressions?

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The first step is to find a common denominator for the expressions being subtracted.

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What is the formula for multiplying two rational expressions?

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What is the process for simplifying a rational expression?

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To simplify a rational expression, factor both the numerator and the denominator and then cancel any common factors.

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What does it mean to find the least common denominator (LCD)?

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The least common denominator (LCD) is the smallest expression that can be used as a common denominator for two or more rational expressions.

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