Warm-Up: Simplifying & Multiplying Rational Expressions

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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 simplest form by canceling common factors in the numerator and denominator.

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What is the first step in multiplying rational expressions?

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The first step is to multiply the numerators together and the denominators together.

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How do you identify values that make a rational expression undefined?

Back

Values that make the denominator equal to zero are the values that make the rational expression undefined.

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What is a common factor in rational expressions?

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A common factor is a factor that appears in both the numerator and the denominator of a rational expression.

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What does it mean to multiply two fractions?

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To multiply two fractions, multiply the numerators together and multiply the denominators together.