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}