document.write( "Question 276637: I am having a very difficult time using the Completing Square. Could someone demonstrate how to use the Square to solve:\r
\n" ); document.write( "\n" ); document.write( "Find the center and radius of the circle given by \"+x%5E2+%2B+y%5E2+-+10x%2B6y%2B30=0+\"\r
\n" ); document.write( "\n" ); document.write( "and / or \"x%5E2+%2B+2x+=4+\"
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Algebra.Com's Answer #201599 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
Find the center and radius of the circle given by
\n" ); document.write( "\"+x%5E2+%2B+y%5E2+-+10x%2B6y%2B30=0+\"
\n" ); document.write( "Separate the x's and y's, and put the 30 on the right side
\n" ); document.write( "\"x%5E2-10x+%2B+y%5E2%2B6y+=+-30\"
\n" ); document.write( "For x, -10/2 = -5 --> 25
\n" ); document.write( "For y, 6/2 = 3 --> 9
\n" ); document.write( "\"x%5E2-10%2B25+%2B+y%5E2%2B6y%2B9+=+-30+%2B+25+%2B+9\"
\n" ); document.write( "\"%28x-5%29%5E2+%2B+%28y%2B3%29%5E2+=+4\"
\n" ); document.write( "Center at (5,-3), r = 2
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\n" ); document.write( "and / or \"x%5E2+%2B+2x+=4+\"
\n" ); document.write( "\"x%5E2+%2B+2x+%2B+1+=+5\"
\n" ); document.write( "\"%28x%2B1%29%5E2+=+5\"
\n" ); document.write( "A parabola, axis of symmetry x = -1
\n" ); document.write( "Vertex at (-1,-5)
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