Completing the Square by Boxed Rockets

Solve Using Completing the Square.

x^{2} - 16 x + 9 = 0

x = 8 \pm \sqrt{55}

x^{2} + 14 x - 9 = 0

x = -7 \pm \sqrt{58}

x^{2} - 16 x + 8 = 0

x = 8 \pm 2 \sqrt{14}

x^{2} + 6 x - 4 = 0

x = -3 \pm \sqrt{13}

x^{2} - 14 x + 3 = 0

x = 7 \pm \sqrt{46}

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

x = -6 \pm \sqrt{41}