DIRECTION: Find the center and the radius of the circle given the equation.
1. x² + y² - 8x - 6y - 39 =0
2. x²+ y² - 10x + 16y - 32 =0
3. x² + y² - 4x - 8y - 16 = 0
4. x² + y² - 12x - 2y - 44 = 0
5. x² + y² - 10x - 10y + 46 = 0
P.s : badly need later
