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Homework Help: Is this correct?

  1. Sep 26, 2006 #1
    Divide using synthetic division (x^3-4x+1) / (x-5)

    i got x^3 + 1^2 -9 Remainder: 46.

    is it right?
     
  2. jcsd
  3. Sep 26, 2006 #2
    :O

    Or is it 1x^3 - 9x^2 R: 46

    ?
     
  4. Sep 28, 2006 #3
    i think your first answer is correct looking quickly becasue there is a place holder for the x^2 term resulting in 0
     
  5. Sep 28, 2006 #4

    Integral

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    What am I missing?

    You are using synthitic division to divide a cubic by a linear term. Should not your result be a quadratic? None of the suggestions made so far are correct.
     
  6. Sep 28, 2006 #5
    As integral said it is not right. Why don't you show your work?
     
  7. Sep 29, 2006 #6

    HallsofIvy

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    I might also point out that if you divide a polynomial, P(x), by the linear term x-a, the remainder is P(a). What do you get if you set x= 5 in
    x3- 4x+ 1?
     
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