Review Add Subtract Multiply Divide Rational Expressions

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Define rational expressions.

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Rational expressions are fractions where the numerator and the denominator are both polynomials.

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What is the first step in adding or subtracting rational expressions with different denominators?

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Find a common denominator for the rational expressions.

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Factor the denominators and find a common denominator to combine the fractions.

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What does it mean to factor a polynomial?

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Factoring a polynomial means expressing it as a product of its factors.

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The LCD is the least common multiple of the denominators b and d.