12/13 - Rational Expressions Review

Front

What is a rational expression?

Back

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

Front

What is the first step in dividing rational expressions?

Back

Factor both the numerator and the denominator completely.

Front

What is the rule for multiplying rational expressions?

Back

Multiply the numerators together and the denominators together.

Front

What does it mean to simplify a rational expression?

Back

To simplify a rational expression means to reduce it to its lowest terms by canceling common factors.

Front

What is the importance of finding a common denominator?

Back

A common denominator is necessary for adding or subtracting rational expressions.

Front

How do you solve equations involving rational expressions?

Back

Cross-multiply if the equation is set equal to another rational expression.

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Front

What is the process for adding rational expressions?

Back

Find a common denominator, rewrite each expression, and then combine the numerators.

Front

What is the formula for subtracting rational expressions?

Back