What is x^2+y^2+8x+18y+72=0 ?

The solution to x^2+y^2+8x+18y+72=0 is Circle with (a,b)=(-4,-9),r=5

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x^2+y^2+8x+18y+72=0

x^{2} + y^{2} + 8 x + 18 y + 72 = 0

(a, b) = (- 4, - 9), r = 5

Solution steps

x^{2} + y^{2} + 8 x + 18 y + 72 = 0

Rewrite

x^{2} + y^{2} + 8 x + 18 y + 72 = 0

in the form of the standard circle equation

(x - (- 4))^{2} + (y - (- 9))^{2} = 5^{2}

Therefore the circle properties are:

(a, b) = (- 4, - 9), r = 5

What is x^2+y^2+8x+18y+72=0 ?
The solution to x^2+y^2+8x+18y+72=0 is Circle with (a,b)=(-4,-9),r=5