Geometry

Question Analysis

The main focus is transforming the circle's general - form equation  to the standard form  by completing the square for the  terms, then extracting the radius .

 

Key Concept Explanation

For a circle in general form , completing the square for  means adding . In the standard form ,  (the radius) is the positive square root of the right - hand side constant.

 

Step-by-Step Solution

1. Given . With no  linear term, focus on  terms.

2. For