# Exercise 22: Maths: Fractions and Symbols (Solution)

This is the solution to Exercise 22.\documentclass[11pt]{scrartcl} \begin{document} The quadratic equation \[ \sum_{i=0}^{2} a_i x^i = 0 \] has solutions given by \[ x = \frac{-a_1 \pm \sqrt{a_1^2 - 4 a_2 a_0}}{2a_2} \] \end{document}