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# 12.6: Division of Rational Expressions

Difficulty Level: Basic Created by: CK-12
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### Vocabulary Language: English Spanish

rational function

rational function

A ratio of two polynomials (a polynomial divided by another polynomial). The formal definition is: $f(x)=\frac{g(x)}{h(x)}, \text{where} \ h(x) \neq 0$.
reciprocal

reciprocal

The reciprocal of a nonzero rational expression $\frac{a}{b}$ is $\frac{b}{a}$.
Least Common Denominator

Least Common Denominator

The least common denominator or lowest common denominator of two fractions is the smallest number that is a multiple of both of the original denominators.
Least Common Multiple

Least Common Multiple

The least common multiple of two numbers is the smallest number that is a multiple of both of the original numbers.
Rational Expression

Rational Expression

A rational expression is a fraction with polynomials in the numerator and the denominator.

Basic

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## Date Created:

Feb 24, 2012

Feb 26, 2015
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