$\"\"$

The center of the sphere is $\"\"$ and point is $\"\"$ .

Equation of a sphere:

An equation of a sphere with center $\"\"$ and radius is $\"\"$ is $\"\"$ .

Where $\"\"$ is the distance between the center of the sphere and point on the sphere.

The distance between the center and a point is

$\"\"$

$\"\"$ .

Substitute $\"\"$ in the equation of the sphere.

$\"\"$

$\"\"$ .

$\"\"$

The equation of the sphere is $\"\"$ .