Question

Circles: Math Please Help: Circles.

Answer 1

The equation of a circle is
`(x-a)^2+(y-b)^2=r^2` where (a,b) is the center of this circle and "r" is the radius.

`y^2-24y+144 +x^2 +2x +1  = -120+144 +1=25`

`(x+1)^2 + <span>(y-12)^2 </span><span> =25 =5^2`
by comparing the previous to equations with the first one, the center will be (1,-12) and the radius is 5.