12/13 - Rational Expressions Review

Front

What is a rational expression?

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

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CCSS.HSA.APR.D.7

Front

What is the first step in dividing rational expressions?

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Factor both the numerator and the denominator completely.

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CCSS.HSA.APR.D.6

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What is the rule for multiplying rational expressions?

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Multiply the numerators together and the denominators together.

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CCSS.HSA.APR.D.7

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What does it mean to simplify a rational expression?

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To simplify a rational expression means to reduce it to its lowest terms by canceling common factors.

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CCSS.HSA.APR.D.6

Front

What is the importance of finding a common denominator?

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A common denominator is necessary for adding or subtracting rational expressions.

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CCSS.7.NS.A.1C

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How do you solve equations involving rational expressions?

Back

Cross-multiply if the equation is set equal to another rational expression.

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CCSS.HSA.REI.A.2

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CCSS.3.NF.A.3B

CCSS.4.NF.A.1

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CCSS.HSA.APR.D.7

Front

What is the process for adding rational expressions?

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Find a common denominator, rewrite each expression, and then combine the numerators.

Tags

CCSS.HSA.APR.D.7

Front

What is the formula for subtracting rational expressions?

Back

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CCSS.HSA.APR.D.7