# How do you solve by completing the square x^2+6x+2=0?

${x}^{2} + 6 x + 9 - 9 + 2 = 0 \Rightarrow {\left(x + 3\right)}^{2} = 7 \Rightarrow$
$x + 3 = \pm \sqrt{7} \Rightarrow x = - 3 \pm \sqrt{7}$.