Answer:
It's an equation of a circle with the center (4, 0) and the radius r = 2.
Step-by-step explanation:
It's an equation of a circle.
The standard form of an equation of a circle:
[tex](x-h)^2+(y-k)^2=r^2[/tex]
(h, k) - center
r - radius
We have:
[tex](x-4)^2+y^2=4\\\\(x-4)^2+(y-0)^2=2^2\Rightarrow(4,\ 0),\ r=2[/tex]
