Question

if the equation of a circle is x squared plus y squared minus 6 X + 4 Y - 1 = 20 then its Centre is

Answer 1

for a general equation,

x²+y²+2gx+2fy+c=0

centre is (-g,-f)

So for x²+y²-6x+4y-1-20=0

centre is (3,-2)