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What is the radius of 4x^2 + 8y^2 + 14x + 16y + 25 = 0
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The equation 4x^2 + 8y^2 + 14x + 16y + 25 = 0 is not that of a circle. In the equation of a circle, the coefficient of x^2 and the coefficient of y^2 have to be equal. 4x^2 + 8y^2 + 14x + 16y + 25 = 0 is the equation of an ellipse and it is not possible to determine the radius.
As 4x^2 + 8y^2 + 14x + 16y + 25 = 0 does not represent a circle its radius cannot be determined.
Posted by justaguide on September 1, 2012 at 6:08 PM (Answer #1)
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