1. Be able to add and subtract rational functions.

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Presentation transcript:

1. Be able to add and subtract rational functions. Objectives: 1. Be able to add and subtract rational functions. Critical Vocabulary: Rational Function, Common Denominator

I. Adding and Subtracting Rational Functions Example 1: Rational Functions are the same, you need a common denominator by finding the LCD. Example 2: 1st: Factor denominators: 2nd: Find the LCD: 3rd: Write using the LCD 4th: Simplify (expand top and factor bottom):

I. Adding and Subtracting Rational Functions Example 3: 1st: Factor denominators: 2nd: Find the LCD: 3(x + 4)(x + 1) 3rd: Write using the LCD 4th: Simplify (expand top and factor bottom): *Try to factor the top to see if anything cancels!!!!

I. Adding and Subtracting Rational Functions Example 4: 1st: Factor denominators: 2nd: Find the LCD: (t + 1)(t - 1)(t - 1) 3rd: Write using the LCD 4th: Simplify (expand top and factor bottom):

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