Adding and Subtracting Rational Expressions

Front

Define rational expression.

Back

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

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

Back

Find a common denominator for the rational expressions.

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What is the formula for finding the least common denominator (LCD) of two rational expressions?

Back

The LCD is the least common multiple (LCM) of the denominators of the rational expressions.

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Front

What is a complex fraction?

Back

A complex fraction is a fraction where the numerator, the denominator, or both contain fractions.

Front

How do you simplify a complex fraction?

Back

Multiply the numerator and the denominator by the least common denominator of the fractions within them.

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Front

Define the term 'like denominators' in rational expressions.

Back

Like denominators are denominators that are the same or can be made the same.