Respuesta :

x^2 + y2 = r2 is the answer

The general formula of a circle is given by:

[tex] ax^2 + by^2 + cx + dy + e = 0 [/tex], where,a,b,c,d and e are constants and [tex] x [/tex] and [tex] y [/tex] are variables.

As we can see, none of the equations provided as options in the question match the general formula of a circle given here.

Therefore, none of the following represents the general formula of a circle.