[tex]\bf -2=-x+x^2-4\\\\
\begin{array}{llccll}
0=&1x^2&-1x&-2\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}
\qquad \qquad
\begin{array}{llll}
\textit{quadratic formula}\\\\
x= \cfrac{ - {{ b}} \pm \sqrt { {{ b}}^2 -4{{ a}}{{ c}}}}{2{{ a}}}
\end{array}[/tex]
