Question

Find the center and radius of the circle x2+y2-x+2y-3=0​

Answer 1

Step-by-step explanation:

given equation is x

2

+y

2

−x+2y−3=0

⇒ (x

2

−2×

2

1

×x+

4

1

)+(y

2

+2y+1)

⇒3+

4

1

+1

⇒(x−

2

1

)

2

+(y+1)

2

=

4

17

∴ the centre is (

2

1

,−1) and raius is

2

17

Answer 2

Answer:

radius is 17 and 2 as per my calculation