Question

equation 2x² + 2y² + 6x-10y-1 = 0 is a circle equation with center ..? and r ..?

Answer 1

Answer:

Step-by-step explanation:

(3/2,-5/2) is center and radius is 3

Answer 2

Step-by-step explanation:

x² + y² + 3x - 5y - 1/2 = 0

Comparing from Circle's equation ,

2g = 3 , g = 3/2

2f = -5 , f = -5/2

c = -1/2

Centre C = (-g , -f ) = (-3/2 , 5/2 )

r = √g² + f² - c = √(9/4)+(25/4)+1/2

=√(9+25+2)/4 = √9 = 3