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Unit: Rational expressions and equations

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Rational equations

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Rational equationsGet 3 of 4 questions to level up!
Find inverses of rational functionsGet 3 of 4 questions to level up!

Modeling with rational expressions

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Mixtures and combined rates word problemsGet 3 of 4 questions to level up!

Reducing rational expressions to lowest terms

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Reduce rational expressions to lowest termsGet 3 of 4 questions to level up!

Multiplying and dividing rational expressions

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Multiply & divide rational expressionsGet 3 of 4 questions to level up!

Adding and subtracting rational expressions

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Add & subtract rational expressions (basic)Get 3 of 4 questions to level up!
Add & subtract rational expressionsGet 3 of 4 questions to level up!

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About this unit

Rational expressions bring together what we know from fractions with our polynomial skills. They arise in a variety of contexts involving rates, particularly when there are unknowns or changing values in the denominator. We'll model with basic rational expressions, then use the polynomial properties to extend our fraction operations.