# Which is an equation of a circle with center (-5, -7) and radius 6?

${\left(x + 5\right)}^{2} + {\left(y + 7\right)}^{2} = 36$
The general equation for a circle with center $\left(a , b\right)$ and radius $r$ is
$\textcolor{w h i t e}{\text{XXX}} {\left(x - a\right)}^{2} + {\left(y - b\right)}^{2} = {r}^{2}$