9.1a Simplify Rational Expressions

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Define 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 is the first step in simplifying a rational expression?

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The first step is to factor both the numerator and the denominator completely.

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What are excluded values in rational expressions?

Back

Excluded values are values of the variable that make the denominator zero, which are not allowed in the expression.

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How do you find excluded values in a rational expression?

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Set the denominator equal to zero and solve for the variable.

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What is the significance of simplifying rational expressions?

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Simplifying rational expressions makes them easier to work with and helps in solving equations.