Question

Find the centre of the circle x² + y² + 4x - y = 0.​

Answer 1

Answer:

x2 + y2 – 4x – y – 5 = 0 Comparing with x2 + y2 + 2gx + 2fy + C = 0 We get 2g = – 4, 2f = – 1 ⇒ g = -2, f = 1 2 12 ∴ C=(-8,-1) = (2, 1 2 12)-x-2-y-2-4x-y-5-0