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Simplify quadratic solution

  1. Oct 22, 2009 #1
    1. The problem statement, all variables and given/known data

    Simplify [tex]\frac{-2\pm\sqrt{-56}}{30}[/tex]

    [tex]\frac{-2\pm 2i\sqrt{14}}{30}[/tex]

    [tex]\frac{-1\pm i\sqrt{14}}{15}[/tex]

    Is this correct?
  2. jcsd
  3. Oct 22, 2009 #2


    Staff: Mentor

    Yes. I would write it with =, though.
    [tex]\frac{-2\pm\sqrt{-56}}{30}~=~\frac{-2\pm 2i\sqrt{14}}{30}~=~\frac{-1\pm i\sqrt{14}}{15}[/tex]
  4. Oct 22, 2009 #3
    Thank you, I am very rusty...
  5. Oct 23, 2009 #4


    Staff: Mentor

    Well, it doesn't show. There was no problem with your work. I was just polishing it a bit.
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