How do you find the center (h,k) and radius r of the circle with the given equation #x^2+y^2-18x+18y=-137#?
1 Answer
Jan 20, 2016
The centre is
Explanation:
The equation needs to be rearranged into the form
First reorder the expression to group the
Each group then needs to be expressed as a square by completing the squares
The circle is then
The centre is therefore