This is a test of Mathjax: $y=\beta_0 + \beta_1^2$ $$y=\beta_0 + \beta_1^2$$ \begin{equation} y=\beta_0 + \beta_1^2 \end{equation} When $a \ne 0$, there are two solutions to \(ax^2 + bx + c = 0\) and they are $$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$