Rational Expressions

Front

Define Rational Expression.

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

Tags

CCSS.HSA.APR.D.7

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What is the first step in simplifying a rational expression?

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The first step is to factor both the numerator and the denominator, if possible.

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CCSS.HSA.APR.D.6

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CCSS.HSA.APR.D.6

Front

What is the rule for multiplying rational expressions?

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To multiply rational expressions, multiply the numerators together and the denominators together.

Tags

CCSS.HSA.APR.D.7

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Back

Tags

CCSS.HSA.APR.D.7

Front

What is the rule for dividing rational expressions?

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To divide rational expressions, multiply by the reciprocal of the divisor.

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CCSS.HSA.APR.D.6

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CCSS.5.NF.A.1

CCSS.5.NF.A.2

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What is the least common denominator (LCD)?

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The least common denominator is the smallest expression that can be used as a common denominator for two or more rational expressions.

Tags

CCSS.HSA.APR.D.7

Front

How do you add rational expressions?

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To add rational expressions, find a common denominator, rewrite each expression, and then add the numerators.

Tags

CCSS.HSA.APR.D.7

Front

Back

Tags

CCSS.HSA.APR.D.7