What is the radius x^2+y^2+2x-4y=5.7 ?

The radius x^2+y^2+2x-4y=5.7 is r=3.27108…

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radius x^2+y^2+2x-4y=5.7

radius

x^{2} + y^{2} + 2 x - 4 y = 5.7

r = 3.27108 \dots

Solution steps

x^{2} + y^{2} + 2 x - 4 y = 5.7

Rewrite

x^{2} + y^{2} + 2 x - 4 y = 5.7

in the form of the standard circle equation

(x - (- 1))^{2} + (y - 2)^{2} = 3.27108 \dots^{2}

Therefore the circle properties are:

(a, b) = (- 1, 2), r = 3.27108 \dots

And the radius is:

r = 3.27108 \dots

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x^{2} + y^{2} + 4 x + 6 y = 23

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What is the radius x^2+y^2+2x-4y=5.7 ?
The radius x^2+y^2+2x-4y=5.7 is r=3.27108…