Problem
Determine the equation of the circle with center \( (9,-5) \) containing the point \( (10,2) \)
Solution
Step 1 ：\( d = \sqrt{(10-9)^2+(2+5)^2} \)
Step 2 ：\( d = \sqrt{1^2+7^2} = \sqrt{50} \)
Step 3 ：\( (x-9)^2+(y+5)^2=58 \)
