Question

x^2+y^2+4x-6y=12

find the radius and the center of the cirlce

Answer 1

center(-2,3)
radius=sqrt(4+9+12)=5

Answer 2

Groups it like this: (x^2+4x) + (y^2+6y) = 12
Complete the square to get: (x+2)^2 + (y+3)^2 = 25
sqrt(25) = 5

Answer 3

y^2-6y