Question

x^2-2x-5=0 x1-? x2-?

Answer 1

$x^2-2x-5=0 \ \ D=2^2+4*5=24=(2 sqrt{6})^2 \ \ x_1= frac{2-2 sqrt{6} }{2}=1- sqrt{6} \ \ x_2= frac{2+2 sqrt{6} }{2}=1+ sqrt{6}$