The quadratic equation

This is followed by an equation on the next line which reads "the sum from i = 0 to 2 a subscript i x superscript i equals 0". This is then followed by the line:

has solutions given by

This line is followed by another equation which reads "x equals (minus a subscript 1 plus or minus the square root of (a subscript 1 squared minus 4 times a subscript 2 times a subscript 0)) divided by (2 times a subscript 2)".

Sort of like this (if your browser is able to render UTF8 characters):

The quadratic equation

Σ_{i=0}^{2} a_{i} x^{i} = 0

has solutions given by

x = (-a_{1} ± √(a_{1}^{2}
- 4 a_{2}a_{0})) / (2 a_{2})