document.write( "Question 449853: please help me. I have trouble completing the square to find the center & radius. The problem is:\r
\n" ); document.write( "\n" ); document.write( "x^2+y^2+2x+10y+25=0 ;\r
\n" ); document.write( "\n" ); document.write( "I need the answer & I need to know how to do more of those problems, thanks.
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Algebra.Com's Answer #309410 by rwm(914)\"\" \"About 
You can put this solution on YOUR website!
Separate x's and y's and constants
\n" ); document.write( "This is a circle.
\n" ); document.write( "x^2+2x+(y+5)^2 = 0
\n" ); document.write( "(x+1)^2+(y+5)^2 = 1
\n" ); document.write( "center -1,-5
\n" ); document.write( "radius 1
\n" ); document.write( "area =pi
\n" ); document.write( "perimeter (circumference) =2pi
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