x^2+4x+y^2 =5 ... complete the square
x^2+4x+4-4+y^2 = 5
(x+2)^2 + y^2 = 9
(x,y) = (-2,0), radius = 3
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Type your answer here. Find the radius for a circle with the equation x2 plus y2 equals 9? ..
(3, -2) You find the center by taking the opposite of the numbers added to the X and to the Y.
The centre is (3,-1) and the radius is sqrt(10).
The center of the circle is at (9, 7) on the Cartesian plane
At the center, (x, y) = (-2, 5)