Question

x^2+y^2-8x-6y+9=0

Answer 1

So what are we doing here? Please be a little more specific

Answer 2

find the center and radius of the circle given by the equation \[x^2+y^2-8x-6y+9=0
\]

Answer 3

if that is the question, and i am fairly sure it is, then you have to complete the square twice
or you could cheat
do you know how to complete the square ?

Answer 4

i can show you if you like, let me know