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Homework Help: Find all real solutions

  1. Oct 28, 2008 #1
    1. The problem statement, all variables and given/known data
    5x^2+2x+1=0


    2. Relevant equations
    -b +- sqrt{b^2 +- 4ac}


    3. The attempt at a solution
    once applied the quadratic formular, i got a minus under the discrimant which means i recieved an error. any other recommendations on how to solve this baby?
     
  2. jcsd
  3. Oct 28, 2008 #2

    Defennder

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    Homework Helper

    There's no error here if you copied the question correctly. The roots of this equation are complex.
     
  4. Oct 28, 2008 #3

    statdad

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    The roots of this equation are complex, but you should be aware that the Quadratic Formula is not the one you typed: it is

    [tex]
    \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}
    [/tex]

    The version you have could cause you massive grief in the future.
     
  5. Oct 28, 2008 #4
    yes sorry i ment that formula. So this equation has no roots(complex)
     
  6. Oct 28, 2008 #5

    HallsofIvy

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    Science Advisor

    It has no real number roots which was the question (I think) you intended to pose.
     
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