Find the center of the circle with equation 9x^2 - 18x + 9y^2 + 45y - 44 = 0.
9x^2 - 18x + 9y^2 + 45y = 44 divide by 9
x^2 -2x + y^2 + 5y = 44/9 complete the square for x and y
(x-1)^2 + (y+2.5)^2 = .............. which shows the center to be ( 1 , -2.5) .
