Adding and Subtracting Rational Expressions

Front

Define rational expressions.

Back

Rational expressions are fractions where the numerator and the denominator are both polynomials.

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What is the first step in adding rational expressions with the same denominator?

Back

Combine the numerators over the common denominator.

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

Back

Find a common denominator for the expressions.

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Front

What is the process to subtract rational expressions?

Back

Rewrite the subtraction as addition of the negative of the second expression, then find a common denominator.

Front

What is a common denominator?

Back

A common denominator is a shared multiple of the denominators of two or more fractions.