Question 1052358
x^2 - 2x + y^2 + 8y - 5 = 0
completing the Square
(x-1)^2 + (y+4)^2 - 1 - 16 - 5 = 0
(x-1)^2 + (y+4)^2 = 22
r = sqrt(22)
{{{drawing(300,300,    -10,10,-10,10,  
 grid(1),
circle(1, -4,0.4),
circle(1,-4,sqrt(22)),
graph( 300, 300, -10,10,-10,10,0))}}}