1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Polynomials math homework

  1. Sep 25, 2006 #1
    What are the ROots:


    ok the 13 really causes a problem because you can't factor that.
    So I move the right side to the left and then you can't find a number that fits so that it equals zero so I tried factoring it somehow but can't do it can someone help?
  2. jcsd
  3. Sep 25, 2006 #2
    That's a fairly evil problem to give you, but oh well (if I needed to solve it, I'd just throw it into maple and not think about it!).

    It's written that way for a reason. Factor the left side and rearrange to change it to

    [tex]x^2(x^2 + 4x + 14) + (4x + 13) = 0.[/tex]

    Do you see how to factor it now?
  4. Sep 25, 2006 #3
    no lol

    well i have to use the quadratic formula?
  5. Sep 25, 2006 #4
    Yes, and all the roots are complex. Are you sure you don't see how to factor that? I'll rewrite it this way:

    [tex]x^2(x^2 + 4x + 13) + x^2 + (4x + 13) = 0[/tex]
  6. Sep 25, 2006 #5
    i thought u were trying to lead me to grouping them to factor but doesn't look like that....

  7. Sep 25, 2006 #6
    Hey Data take a look :


  8. Sep 25, 2006 #7
    looks good :smile:
  9. Sep 25, 2006 #8
    <3 you :!!)
  10. Oct 4, 2006 #9
    in matlab:

    >>p= x^4+4x^3+14x^2+4x+13;

    its very easy...heheh
  11. Oct 4, 2006 #10


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Yes, relying on the previous work of intelligent people is always the easiest way.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Polynomials math homework
  1. Maths Homework (Replies: 5)

  2. Analysis math homework (Replies: 0)