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Math Help - Quadratic equation or...

  1. #1
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    Quadratic equation or...

    Okay, so I used the quadratic formula to solve the following equation:

     x^2 - 6x + \frac{226}{25} = 0

    I came up with 3 +/- i after reducing. My question is, if the quadratic formula applies to this equation, did I get the correct answer?
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  2. #2
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    Quote Originally Posted by wrongnmbr View Post
    Okay, so I used the quadratic formula to solve the following equation:

     x^2 - 6x + \frac{226}{25} = 0

    I came up with 3 +/- i after reducing. My question is, if the quadratic formula applies to this equation, did I get the correct answer?
    You should have a different co-efficient for i

    Yes, it's a quadratic equation and the quadratic formula applies.
    Can you try it again?
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  3. #3
    Junior Member CuriosityCabinet's Avatar
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    Using

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

    I got x=3\pm\frac{1}{5}i.
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  4. #4
    Super Member Bacterius's Avatar
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    Using x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} I get x = 6 \pm \frac{2}{5}i which is the same result as CuriosityCabinet's once simplified. The quadratic formula applies to all quadratics, you probably just made a minor numerical error somewhere.
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