Solve $x^{2}+x+1=0$

  • A
    $\frac{-1 + \sqrt{3} i}{2}$
  • B
    $\frac{-1 \pm \sqrt{3} i}{2}$
  • C
    $\frac{1 \pm \sqrt{3} i}{2}$
  • D
    $\frac{-1 \pm \sqrt{2} i}{2}$

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