### Home > CCG > Chapter 12 > Lesson 12.2.4 > Problem 12-105

12-105.

Describe each circle by finding the center and radius. You need to “complete the square” to rewrite the equation in part (b) in graphing form. Homework Help ✎

Recall the standard form for a circle:

where the pointis the circle's center and is the radius.Center:

Radius: