What is x^2+y^2=20-x ?

The solution to x^2+y^2=20-x is Circle with (a,b)=(-1/2 ,0),r= 9/2

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x^2+y^2=20-x

x^{2} + y^{2} = 20 - x

(a, b) = (- \frac{1}{2}, 0), r = \frac{9}{2}

Solution steps

x^{2} + y^{2} = 20 - x

Rewrite

x^{2} + y^{2} = 20 - x

in the form of the standard circle equation

(x - (- \frac{1}{2}))^{2} + (y - 0)^{2} = (\frac{9}{2})^{2}

Therefore the circle properties are:

(a, b) = (- \frac{1}{2}, 0), r = \frac{9}{2}

x^{2} + y^{2} = 2000

(x - 5)^{2} + (y + 3)^{2} = 7

(x - 9)^{2} + (y + 7)^{2} = 1 1^{2}

4 y^{2} + 4 x^{2} - 4 y - 4 x - 7 = 0

x^{2} - 10 x + y^{2} = 0

What is x^2+y^2=20-x ?
The solution to x^2+y^2=20-x is Circle with (a,b)=(-1/2 ,0),r= 9/2