SOLUTION: x^2 + y^2 -2x +2y -18 = 0 I need to find the center and radius of the circle

SOLUTION: x^2 + y^2 -2x +2y -18 = 0 I need to find the center and radius of the circle

Algebra.Com

Question 1028352: x^2 + y^2 -2x +2y -18 = 0
I need to find the center and radius of the circle
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Complete the Squares and put into standard form; and read the center (h,k) and radius r directly from the equation.

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Radius size is and center of the circle is (1,-1).

* Why this step was done is shown here: A lesson which includes how to Complete The Square
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