LaTex Test

$$x = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a}$$ $x = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a}$ $x = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a}$