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Published byHilary Stewart Modified over 7 years ago

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Chapter 7: Rational Algebraic Functions Section 7-8: Sums and Differences of Rational Expressions

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Objectives Be able to add or subtract several rational expressions and simplify the result.

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Example: Find the LCM!!!!!

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Ideas to keep in mind when adding/subtracting rational expressions: If any simplifying of the expressions can be done first, do it before adding or subtracting

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Ideas to keep in mind when adding/subtracting rational expressions: Make sure the common denominator is the least common multiple of the denominators.

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Ideas to keep in mind when adding/subtracting rational expressions: If one denominator has a factor of the form a – b and another has the form b – a, only one of these factors needs to appear in the common denominator since they are additive inverses of each other.

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