Add and Subtract Rational Expressions Review

Front

Define rational expressions.

Back

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

Front

What is the first step in subtracting rational expressions with different denominators?

Back

Find a common denominator for the rational expressions.

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Back

Front

What is the formula for adding two rational expressions?

Back

Front

What is the formula for subtracting two rational expressions?

Back

Front

Back

First, factor the denominators, find a common denominator, and then combine the numerators.

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Back

Front

Back

Front

Back

Front

What is the importance of finding a common denominator in rational expressions?

Back

Finding a common denominator allows you to combine the fractions into a single expression.