Problem - 4751
Solve $x^2 - x -1=0$.
Appling the quadratic formula.
$$x=\frac{1\pm\sqrt{(-1)^2 - 4\times 1\times (-1)}}{2}=\boxed{\frac{1\pm\sqrt{5}}{2}}$$
Solve $x^2 - x -1=0$.
Appling the quadratic formula.
$$x=\frac{1\pm\sqrt{(-1)^2 - 4\times 1\times (-1)}}{2}=\boxed{\frac{1\pm\sqrt{5}}{2}}$$