Question

Find the radius of the circle defined by the equation.

6x^2 + 6y^2 + 48x - 36y - 144 = 0

Answer 1

Put the x terms together and complete the square in x.

Put the y terms together and complete the square in y.

Then write the equation in this form:

\((x - h)^2 + (y - k)^2 = r^2\) where r is the radius.