1 / 7

Pre- calc w-up 10/21

Pre- calc w-up 10/21. simplify. 4.7 Radical Equations and Inequalities. Equations which radical expressions include variables are radical equations. When you raise each side of an equation you can produce extraneous solution These are solutions that do not satisfy the original equation

rwetzel
Download Presentation

Pre- calc w-up 10/21

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. Pre-calc w-up 10/21 simplify

  2. 4.7 Radical Equations and Inequalities • Equations which radical expressions include variables are radical equations. • When you raise each side of an equation you can produce extraneous solution • These are solutions that do not satisfy the original equation • Therefore, you must always check your answers

  3. Ex1: Solve for x – must check for extraneous solution

  4. Try this one on your own Ex2: • Ex2: Don’t forget to check:

  5. Ex3: Solve – a little more difficult You’ll have to square each side more than once  good times

  6. We use the same procedure to solve radical inequalities.Remember you we want real answers so we cannot have negatives under the radical • -1.25 < x < 23.75 Can’t have a negative in the square root so lets solve the stuff under the radical sign: 4x+5 > 0 4x > -5 x > -1.25 FINAL ANSWER IS…

  7. SUMMARY: • 4.7 page 255 # 12-25 and 29 - 34

More Related