Homework Help: college algebra

Posted by ladybug on Thursday, October 25, 2012 at 10:31pm.

Write the equation of the circle in standard form. Find the center, radius and intercepts.

x^2 + y^2 + 4x + 2y - 20 = 0

college algebra - Reiny, Thursday, October 25, 2012 at 10:48pm
complete the square

x^2 + 4x + 4 + y^2 + 2y + 1 = 20 + 4 + 1

(x+2)^2 + (y+1)^2 = 25

I will let you handle the rest, since this is a very basic result.

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