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Homework Help: Solving quadratic equations ( finding the value of x)

  1. Nov 14, 2008 #1
    1. The problem statement, all variables and given/known data

    I just need some guidance regarding how to work out the value of x in the quadratic equation. I don't want you guys to do the work for me, I just want to know how to figure it out.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Nov 14, 2008 #2


    Staff: Mentor

    This should probably be in the Precalculus forum...

    For a given quadratic equation, you can solve for the variable by completing the square. Do you need more details than that?
  4. Nov 14, 2008 #3


    User Avatar
    Science Advisor

    1) Factor if you can.

    2) Complete the square

    3) Use the quadratic formula.
  5. Nov 15, 2008 #4


    User Avatar
    Science Advisor
    Homework Helper

    Remembering the quadratic formula is useful anyway, because it always works. Even if you think that you should be able to solve it using one of the other methods, but you really don't see it, you can always revert to writing down the quadratic formula and just plugging in the numbers.
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