Quadratic Formula by Boxed Rockets

Use the Quadratic Formula to Solve with Surds.

x^{2} - 7 x - 8 = 0

x = 8 or -1

x^{2} + 11 x - 2 = 0

x = \frac{-11 \pm \sqrt{129}}{2}

x^{2} + 3 x - 9 = 0

x = \frac{-3 \pm 3 \sqrt{5}}{2}

x^{2} - 11 x + 8 = 0

x = \frac{11 \pm \sqrt{89}}{2}

x^{2} + 3 x - 1 = 0

x = \frac{-3 \pm \sqrt{13}}{2}

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

x = -7 \pm 2 \sqrt{13}