LaTex Test

\[ x = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a} \]\( x = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a} \) \( x = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a} \)