Simplifying 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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How do you simplify 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 for a rational expression to be undefined?

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A rational expression is undefined when its denominator equals zero.

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What is the first step in multiplying rational expressions?

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The first step is to factor all numerators and denominators.

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How do you multiply two rational expressions?

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Multiply the numerators together and the denominators together, then simplify if possible.

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