Question

se considera ecuatia xla 2-mx-1=0 det x1 si x2

Answer 1

$x^2-mx-1=0 \\ \\ \Delta =m^2+4 \Rightarrow x_{1,2} = \frac{m\pm \sqrt{m^2+4} }{2} \\ \\ \Rightarrow x_1 = \frac{m+ \sqrt{m^2+4} }{2} , \quad \quad x_2 = \frac{m- \sqrt{m^2+4} }{2}$