A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

SolomonZelman

  • 2 years ago

x^3+Kx^2+12x-8, is divisible by (x-2) so that the remainder is 4 what is K?

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

    this is your question or you just testing other's knowledge again ?

  2. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Sorry if that is i nappropriate!

  3. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I'll close the question if this is inappropriate.

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

    very inappropriate

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

    lol, how many times i need to tell you that its not inappropriate, but its not required! and i explained what harm can 'not required' do...

  6. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Close?

  7. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1381783626778:dw|

  8. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    OK I'm closing?

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

    more important is that you do not repeat this again

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

    alt+F4 command works better

  11. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I won't do that again if it is inapp...

  12. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    so u know that

  13. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yep!

  14. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Not this equation, but I can certainly do it.

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

    see ? you just wasted 2 minutes of dan. thats the harm i am talking about...

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

    he could have easily helped a needy fellow

  17. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    OK I'll close.

  18. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    lol

  19. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    just did

  20. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Sorry guys! Ignore my math questions if other than calc!

  21. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1381783979271:dw|

  22. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    sign error it shud be -5

  23. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    What I am getting is that |dw:1381870420911:dw|

  24. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    See why?

  25. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    dan815, I don't help, really ignore me!

  26. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    b/c remainder is 4, that's how....

  27. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Well we could have done this much easier way... let f be the expression you were fiven f(2)=4 solve for k .... \[2^3+k(2)^2+12(2)-8=8+4k+24-8=4k+24\] 4k+24=4

  28. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Solve for k.

  29. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I knew how to do it from the beginning...closed the question... Sorry!

  30. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I just wanted to make sure you guys know it wasn't as complicated as you were making it. :P

  31. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    For sure not! Another way to do it is synthetic division... -8+2(16+2)k=4 -the remainder I get it don't worry.

  32. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Yep. That is a way to do it but I think it easier to do if given (poly of higher degree than 0)/(x-c), then all we need to do is that poly evaluated at c to find the remainder. f(c)=Remainder

  33. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes. U see what i did..... I know it 100% don't worry.

  34. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Ok. I'm not worried. I'm only responding here because I wanted to.

  35. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    And also just in case someone else can learn from it.

  36. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    let other ppl... they do

  37. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    What?

  38. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    know this, since they came to help..... But true, they were making it much more complicated than what it is.

  39. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    (add to my prev comment)

  40. SolomonZelman
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    WHATEVER.

  41. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Ok....

  42. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    lol

  43. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    calm down guys none of us like PHD students here -.- we're all noobs believe it or not

  44. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    lol. I was just trying to help....

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

    on a lost cause :P

  46. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Looks like it.

  47. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    well it was helpful! i didnt think of just subbing in 2

  48. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Your way was cute too.

  49. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    :)

  50. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    how did u know that subbing in that value gives you the remainder though? like the way if its 0 then it is a good factor

  51. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    Theorems.

  52. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    I actually think it is called the remainder theorem.

  53. dan815
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    oh ive heard of that before, thanks!

  54. myininaya
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    http://en.wikipedia.org/wiki/Polynomial_remainder_theorem

  55. 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.