Complete the square to write the equation of the sphere in standard form.
Find the center and radius. 9x² + 9y² + 9z² - 6x + 18y + 1 = 0
Complete the square to write the equation of the sphere in standard form.
Find the center and radius. 9x² + 9y² + 9z² - 6x + 18y + 1 = 0