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Homework Help: Factor 2r^2 +2r+1= 0

  1. Oct 15, 2006 #1
    I'm feeling really stupid right now, but I can't seem to get this to factor.
    2r^2 +2r+1= 0
    Can someone please help me out?
     
  2. jcsd
  3. Oct 15, 2006 #2

    Hurkyl

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    You could factor it if you knew its roots, right?
     
  4. Oct 15, 2006 #3
    so to find the roots I'd use the quadratic formula
    -2 +/- [tex] \sqrt 4-8[/tex] /4
    so then would my roots be -.5 +/- 2i?
     
  5. Oct 15, 2006 #4

    Hurkyl

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    I think you divided wrong. But you have the right idea. (And you should use parentheses when appropriate)
     
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