Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Polynomial division

  1. Mar 2, 2008 #1
    1. Polynomial division

    a) For what values of k is x-2 a factor x^4 – 5x^3 + 3x + k in Q[x]?

    b) For what values of k is x+1 a factor of x^4 + 2x^3 – 3x^2 + kx + 1 in Z5[x]
     
  2. jcsd
  3. Mar 2, 2008 #2

    Hurkyl

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Dash, you need to show what effort you have put into the problem before we can help you. This is both common sense and site policy. Until you are willing to do so, please stop posting your homework questions.
     
  4. Mar 2, 2008 #3
    my problem is that I dont know how to start the problem?
     
  5. Mar 2, 2008 #4

    HallsofIvy

    User Avatar
    Science Advisor

    Are you saying you do not know how to divide? "Polynomial division" is basically the same as "long division" in arithmetic: choose a "trial quotient" based on the term with the highest power, multiply by the divisor and subtract from the dividend. Repeat.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook