Question

x2+6x=2

Answer 1

$$
x^2+6x=2 \implies x^2+6x-2=0\\
\begin{matrix}
x^2 & +6x & -2 & = 0 \\
\color{blue}{a} & \color{blue}{b} & \color{blue}{c} &
\end{matrix}\\
\text{use the quadratic formula}\\
x = \cfrac{-\color{blue}{b}\pm\sqrt{\color{blue}{b}^2-4\color{blue}{ac}}}{2\color{blue}{a}}
$$