find the radius and center of

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- Nov 4th 2008, 03:26 AMea12345urgent help please
find the radius and center of

- Nov 4th 2008, 03:28 AMmr fantastic
- Nov 4th 2008, 03:35 AMea12345urgent help
actual equation is

- Nov 4th 2008, 03:45 AMmr fantastic
- Nov 4th 2008, 03:49 AMea12345
x2 + y2 + 8x + 8 = 0

x2 + 8x + (4)2 + (y – 0)2 = -8 + x2

(x + 4)2 + (y – 0)2 = 8

(x – (-4) )2 +(y – 0)2 =( )

(x –(-x) )2 + (y – 0) = (2 )

SO, centre is (-4 , 0) and radius is 2

its true or not ? - Nov 4th 2008, 03:51 AMmr fantastic
- Nov 4th 2008, 03:53 AMea12345
then