What is 45x^2+45y^2=-4x ?

The solution to 45x^2+45y^2=-4x is Circle with (a,b)=(-2/45 ,0),r= 2/45

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45x^2+45y^2=-4x

45 x^{2} + 45 y^{2} = - 4 x

(a, b) = (- \frac{2}{45}, 0), r = \frac{2}{45}

Solution steps

45 x^{2} + 45 y^{2} = - 4 x

Rewrite

45 x^{2} + 45 y^{2} = - 4 x

in the form of the standard circle equation

(x - (- \frac{2}{45}))^{2} + (y - 0)^{2} = (\frac{2}{45})^{2}

Therefore the circle properties are:

(a, b) = (- \frac{2}{45}, 0), r = \frac{2}{45}

What is 45x^2+45y^2=-4x ?
The solution to 45x^2+45y^2=-4x is Circle with (a,b)=(-2/45 ,0),r= 2/45