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: Pesky remainder problem

  1. Dec 23, 2003 #1
    If p(x) = (x+2)(x+k) and if the remainder is 12 when p(x) is divided by x-1, then what is the value of k?
     
  2. jcsd
  3. Dec 23, 2003 #2
    I'm not sure if it is the right answer, but I think it is 3.

    After using long division, we get the remainder 3k+3, which equals 12, meaning k=3.
     
  4. Dec 23, 2003 #3
    Yes that is rite, found by long division or by saying that when x=1, expression =12 (remainder theorem or something like that)

    (1+2)(1+k)=12

    k=3
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook