Answer:
(x - 2)² + (y + 1)² = 9
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
here (h, k) = (2, - 1) and r = 3
(x - 2)² + (y - (- 1))² = 3²
(x - 2)² + (y + 1)² = 9 ← equation of circle
