Chapter 5 Exam Practice!!!

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What is the process to add rational expressions?

Back

To add rational expressions, you must have a common denominator. Once the denominators are the same, you can add the numerators and keep the common denominator.

Front

What is a rational expression?

Back

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

Front

How do you find the least common denominator (LCD) of two rational expressions?

Back

To find the LCD, factor each denominator into its prime factors and take the highest power of each factor that appears.

Front

What does it mean for a rational expression to be undefined?

Back

A rational expression is undefined when its denominator equals zero.

Front

How do you simplify a rational expression?

Back

To simplify a rational expression, factor both the numerator and the denominator and then cancel any common factors.

Front

What is the formula for dividing rational expressions?

Back

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The first step is to factor the denominators to find a common denominator.

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