Completing the Square by Boxed Rockets

Solve Using Completing the Square.

x^{2} - 2 x - 6 = 0

x = 1 \pm \sqrt{7}

x^{2} + 12 x + 5 = 0

x = -6 \pm \sqrt{31}

x^{2} + 12 x - 10 = 0

x = -6 \pm \sqrt{46}

x^{2} - 12 x + 1 = 0

x = 6 \pm \sqrt{35}

x^{2} - 12 x + 6 = 0

x = 6 \pm \sqrt{30}

x^{2} + 2 x - 6 = 0

x = -1 \pm \sqrt{7}