In this case, we'll have to carry out several steps to find the solution.
Step 01:
Data
x² - 18x + y² - 8y - 8 = 0
circle standard form = ?
Step 02:
x² - 18x + y² - 8y - 8 = 0
x:
![\text{ (}(-18)/(2))^2=(-9)^2=81](https://img.qammunity.org/2023/formulas/mathematics/college/cevm5pnwlwre4866lms2y7kpoc08504k7c.png)
y:
![((-8)/(2))^2=(-4)^2=16](https://img.qammunity.org/2023/formulas/mathematics/college/ls7tg9tpmege0ma5brilr7ihg2j432sieq.png)
x² - 18x + 81 + y² - 8y + 16 = 8 + 81 + 16
(x - 9)² + (y - 4)² = 105
The answer is:
(x - 9)² + (y - 4)² = 105