A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

someone please help with this algebra!

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i have to solve for x 8/(x^2-1) + 4x/(x-1) + 8/(x+1) = 0

  2. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    combine fractions by finding common denominator can you factor x^2 -1 ?

  3. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    (x+1)(x-1)

  4. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    good and the other 2 denominators are factors of that right

  5. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yeah but i get lsot after that

  6. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so our denominator will be (x+1)(x-1) for the 1st fraction nothing changed, 2nd fraction we added (x+1) so add (x+1) to numerator, 3rd fraction we added (x-1) so add (x-1) to numerator

  7. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so 8 +4x(x+1)+8(x-1)=0

  8. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes but that is all over (x-1)(x+1)

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ohhh i forgot that step

  10. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    8+4x+8=0

  11. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    4x=16 so therefore x=4??

  12. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now here is shortcut, because it equals 0 the denominator doesnt matter 0/x = 0 so set numerator equal to 0 and solve for x

  13. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    did u get 4?

  14. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    you cant cancel the (x+1) and (x-1) because there is addition on numerator

  15. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i have 4x^2 +12x=0

  16. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    and now im lost again

  17. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    good so far try factoring out an x

  18. dumbcow
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i mean take an x away from each term then you will have a product =0 solve for each part setting it equal to 0 you will have 2 answers

  19. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.