Question

Find an equation of the circle with center (2−8) and radius 4 in the form of
(x−h)^2+(y−k)^2=r^2
where h, k, and r are constants.

Answer 1

\(\large \bf (x-{\color{brown}{ h}})^2+(y−{\color{blue}{ k}})^2={\color{olive}{ r}}^2\qquad center({\color{brown}{ h}},{\color{blue}{ k}})\qquad radius={\color{olive}{ r}}\)