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 are excluded values in rational expressions?

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Excluded values are the values of the variable that make the denominator zero, rendering the expression undefined.

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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 out any common factors.

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The excluded value is x = 8, as it makes the denominator zero.

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What is the process of multiplying rational expressions?

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

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