Answer:
x² - 22x + y² + 18y + 58 = 0
Step-by-step explanation:
Using the equation of a circle :
(x - h)² + (y - k)² = r²
Solving :
Substitute 11, -9, 12 in place of h, k and r respectively.
- (x - 11)² + (y + 9)² = (12)²
- x² - 22x + 121 + y² + 18y + 81 = 144
- x² - 22x + y² + 18y + 202 = 144
- x² - 22x + y² + 18y + 58 = 0
