Explanation
The equation of a circle in standard form looks like this:
[tex](x-h)^2+(y-k)^2=r^2[/tex]
Where r is the radius of the circke and (h,k) is its center.
The circle in the picture is centered around point (-5,-3) and has a radius of 3 units. Then we have h=-5, k=-3 and r=3.
Answer
Then the equation is:
[tex](x+5)^2+(y+3)^2=3^2[/tex]
