Mathematics

Problem

Find the zeros of the quadratic equation

x^2 - 2x - 1 = 0

. a)

-1+\sqrt{2}\text{ and }-1-\sqrt{2}

1+\sqrt{8}\text{ and }1-\sqrt{8}

1+\sqrt{2}\text{ and }1-\sqrt{2}

1+\dfrac{\sqrt{2}}{2}\text{ and }1-\dfrac{\sqrt{2}}{2}