SOLUTION: Complete the square and write the equation in standard form. Then give the center and radius of the circle. x2 + y2 + 6x + 8y + 25 = 16

Algebra ->  Equations -> SOLUTION: Complete the square and write the equation in standard form. Then give the center and radius of the circle. x2 + y2 + 6x + 8y + 25 = 16       Log On


   

Question 1179517: Complete the square and write the equation in standard form. Then give the center and radius of the circle.
x2 + y2 + 6x + 8y + 25 = 16

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Standard Form of an Equation of a Circle is %28x-h%29%5E2+%2B+%28y-k%29%5E2+=+r%5E2
where Pt(h,k) is the center and r is the radius
x^2 + y^2 + 6x + 8y + 25 = 16
0r
(x+3)^2 + (y+4)^2 - 9 - 16 + 25 = 16
(x+3)^2 + (y+4)^2 = 16 = r^2
C(-3, -4) and r = 4