document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=503161>Question 503161</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the center and the radius of x^2+y^2+2 x+6 y+1=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #339098 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=339098\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the center and the radius<BR>\n" );
document.write( "x^2+y^2+2 x+6 y+1=0<BR>\n" );
document.write( "complete the square<BR>\n" );
document.write( "(x^2+2x+1)+(y^2+6y+9)=-1+1+9<BR>\n" );
document.write( "(x+1)^2+(y+3)^2=9<BR>\n" );
document.write( "Center: (-1, -3)<BR>\n" );
document.write( "Radius=&#8730;9=3 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );