# Formula pq-Formula (Solution of a Quadratic Equation)

## First solution

Unit
The quadratic equation $$x^2+\class{red}{p}\,x + \class{blue}{q} ~=~ 0$$ has two solutions $$x_1$$ and $$x_2$$. Here $$x_1$$ is the first solution with a plus sign.

## Second solution

Unit
Second solution with a minus sign.

Unit