SOLUTION: Hey guys, So I was on your website, practicing solving quadratics by completing the square (as you do) and I ran in to a problem. I had done this: {{{2x^2+12x+20=0}}} {{{x^2

Question 443130: Hey guys,
So I was on your website, practicing solving quadratics by completing the square (as you do) and I ran in to a problem. I had done this:

(where the nines are b/2^2)

What do I do now that there's a negative number on the right side? I can't square root both! HELP!!

Answer by Gogonati(855) (Show Source): You can put this solution on YOUR website!
If you find the determinant of this quadratic equation .
We answered that this quadratic equation has no real solution.
If you know the complex numbers you can find the complex roots.
and where .
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