document.write( "Question 426645: Find the center and the radius of the circle
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\n" ); document.write( "x^2+y^2-18x+4y+4=0 \n" ); document.write( "

Algebra.Com's Answer #296770 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "Finding the center and the radius of the circle by completing the square
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document.write( "Standard Form of an Equation of a Circle is 
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document.write( "where Pt(h,k) is the center and r is the radius\r
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document.write( "x^2+y^2-18x+4y+4=0
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document.write( "(x-9)^2-81 + (y+2)^2-4 + 4 = 0
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document.write( "(x-9)^2 + (y+2)^2 = 81
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document.write( "  C(9,-2) r  = 9 \n" );
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