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What is a rational expression?

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A rational expression is a fraction where the numerator and the denominator are both polynomials.

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What does it mean to simplify a rational expression?

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Simplifying a rational expression means to reduce it to its simplest form by factoring and canceling common factors.

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What are the steps to simplify a rational expression?

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1. Factor the numerator and denominator. 2. Cancel any common factors. 3. Rewrite the expression.

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What is the difference between a factor and a multiple?

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A factor is a number that divides another number without leaving a remainder, while a multiple is the product of a number and an integer.

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How do you factor a difference of squares?

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How do you determine when a rational expression is undefined?

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A rational expression is undefined when its denominator equals zero.

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