1 / 20

Rational Expressions Finding LCD

Rational Expressions Finding LCD. Algebra. Review: Adding Fractions. You can only add like to like Same Denominators. Different Denominators. Make them the same find a common denominator The product of all denominators is always a common denominator

lane-gillespie
Download Presentation

Rational Expressions Finding LCD

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. Rational Expressions Finding LCD Algebra

  2. Review: Adding Fractions You can only add like to like Same Denominators

  3. Different Denominators Make them the same find a common denominator The product of all denominators is always a common denominator But not always the least common denominator

  4. Finding the LCD Example:

  5. Factor the Denominators

  6. Each factor in the denominators needs to be used at least once in the LCD. Assemble LCD

  7. ×5 ×4 ×5 ×4 Build up Fractions to LCD

  8. Add Numerators And Reduce if Needed

  9. Rational Expressions Example:

  10. Factor the Denominators

  11. DENOMINATORS Each factor in the denominators needs to be used at least once in the LCD. Assemble LCD

  12. ( x 1 ) ( ( ( x x x 1 1 1 ) ) ) + + - - ( ) FACTOREDDENOMINATORS LCD = ( x + 1 )( x - 1 )( x - 1 ) Build up Fractions to LCD

  13. Add Numerators

  14. Simplify Numerator

  15. Summary of Steps • Factor denominators • Assemble LCD • Build up Fractions • Add/Subtract Numerators • Simplify Numerator • Reduce Factors if Possible

  16. So the LCD is 2(x + 3)(x – 3) Add or subtract as indicated.

  17. So the LCD is (x – 2)(x + 3)(x – 3) Subtract

  18. Rational Expressions Finding LCD Algebra 1 & Algebra 1 Honors

More Related