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Math Help - Linear algebra, polar coordinate problem.

  1. #1
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    Linear algebra, polar coordinate problem.

    Find all solutions for x^2-3x+5 and express them in the form a+bi.

    I dont really have a clue, I used the quadratic formula and got (3+(-11)^(1/2))/2 and 3-(-11)^(1/2)/2. From there I am totally clueless as to how to get to a+bi form.

    Can anyone help?
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  2. #2
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    Quote Originally Posted by LostInCalculus View Post
    Find all solutions for x^2-3x+5 and express them in the form a+bi.

    I dont really have a clue, I used the quadratic formula and got (3+(-11)^(1/2))/2 and 3-(-11)^(1/2)/2. From there I am totally clueless as to how to get to a+bi form.

    Can anyone help?
    \frac{3 \pm \sqrt{-11}}{2} = \frac{3 \pm i\, \sqrt{11}}{2} = \frac{3}{2} \pm i\, \frac{\sqrt{11}}{2} !!
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  3. #3
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    Wow, one of those simple things that you just gotta know.

    Thanks alot!
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