Ask Me Help Desk - Graphing Parabolas, Really weird answer

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Graphing Parabolas, Really weird answer

So, I have the equation y= -3(x-2)^2-13
I tried to find the x-intercepts so that I could graph the parabola, but I got this crazy answer:

-2 plus or minus the square root of 39 over negative 3

??

Is there any reason why you're not expecting "crazy answers"?

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This has two complex solutions. It does not cross the x axis.

$y=-3(x-2)^{2}-13$

Set y to 0 and get $2+\frac{\sqrt{39}}{3}i, \;\ 2-\frac{\sqrt{39}}{3}i$

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