Multiply and Divide Rational Expressions

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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

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What does it mean to multiply rational expressions?

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To multiply rational expressions, multiply the numerators together and the denominators together, then simplify if possible.

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CCSS.HSA.APR.D.7

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What is the reciprocal of a rational expression?

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CCSS.HSA.APR.D.6

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What is the KFC method in division of rational expressions?

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KFC stands for Keep, Flip, Change: Keep the first fraction, Flip the second fraction (take its reciprocal), and Change the division to multiplication.

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CCSS.HSA.APR.D.6

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How do you simplify a rational expression?

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To simplify a rational expression, factor both the numerator and the denominator and then cancel any common factors.

Tags

CCSS.HSA.APR.D.6

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What is the first step in dividing rational expressions?

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The first step is to multiply by the reciprocal of the second expression.

Tags

CCSS.HSA.APR.D.6

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CCSS.HSA.APR.D.6

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CCSS.HSA.APR.C.4

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CCSS.HSA.APR.D.6