SOLUTION: A circle has the equation 5x^2+5y^2+30x-20y-60=0. Find the center the radius of the cirlce.

Algebra ->  Graphs -> SOLUTION: A circle has the equation 5x^2+5y^2+30x-20y-60=0. Find the center the radius of the cirlce.       Log On


   

Question 517103: A circle has the equation 5x^2+5y^2+30x-20y-60=0. Find the center the radius of the cirlce.
Answer by Gogonati(855) About Me  (Show Source):
You can put this solution on YOUR website!
=>5%28x%5E2%2B6x%2B9%29%2B5%28y%5E2-4y%2B4%29-60-65=0=>5%28x%2B3%29%5E2%2B5%28y-2%29%5E2=125=>
%28x%2B3%29%5E2%2B%28y-2%29%5E2=25 From the final equation we conclude that the center is
the point (-3, 2) and the radius is 5.