1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Find all real solutions

  1. Oct 28, 2008 #1
    1. The problem statement, all variables and given/known data

    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


    User Avatar
    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


    User Avatar
    Homework Helper

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

    \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

    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


    User Avatar
    Staff Emeritus
    Science Advisor

    It has no real number roots which was the question (I think) you intended to pose.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?