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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 or subtract rational expressions with the same denominator?

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To add or subtract rational expressions with the same denominator, combine the numerators and keep the denominator the same.

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What is the first step in adding or subtracting rational expressions with different denominators?

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The first step is to find a common denominator.

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How do you find a common denominator for two rational expressions?

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The common denominator is the least common multiple (LCM) of the denominators.

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What is the formula for subtracting two rational expressions?

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What is the process for simplifying a rational expression?

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Factor the numerator and denominator, cancel common factors, and simplify.

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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.

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