1 / 10

3.5 Adding and Subtracting Rational Expressions

3.5 Adding and Subtracting Rational Expressions. 12/12/12. 3 5 x. •. •. Divide out the common factor 5 and simplify. 3 x. =. =. 5. x 5. +. b. x. 6 x. 2 3 x. 3. •. •. c. Divide out the common factors 2 and x. =. =. 14 x 2. 2 7 x x. 7 x.

amato
Download Presentation

3.5 Adding and Subtracting Rational Expressions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 3.5 Adding and Subtracting Rational Expressions 12/12/12

  2. 3 5 x • • Divide out the common factor 5 and simplify. 3x = = 5 x 5 + b. x 6x 2 3 x 3 • • c. Divide out the common factors 2 and x. = = 14x2 2 7 x x 7x • • • Example 1 Simplify a Rational Expression Simplify the rational expression, if possible. 15x a. 5 This expression is already in simplest form.

  3. Ex 1: Simplify = Factor out 3xy

  4. Ex 2: Simplify = Factor out (x+5) = Combine Like Terms

  5. Ex 3: Simplify Big X = Factor out () Simplify brackets = a2 – b2

  6. Different Denominators: When adding/subtracting fractions and the denominators are different, find the least common denominator (LCD).

  7. Ex 4: Simplify LCD:

  8. Ex 5: Simplify Big X LCD: ( Simplify numerator

  9. Ex 6: Simplify Big X LCD: ( Switch the signs of the second numerator Combine Like terms

  10. Homework: WS 3.5 odd only

More Related