document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=275550>Question 275550</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the center and radius of each circle whose equation is given. <BR>\n" );
document.write( "(x*x)+(y*y)+4x-8=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #200952 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=200952\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the center and radius of each circle whose equation is given. <BR>\n" );
document.write( "(x*x)+(y*y)+4x-8=0<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "x^2 + 4x + ? + y^2 = 8<BR>\n" );
document.write( "Complete the square:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "x^2 + 4x + 4 +y^2 = 8 + 4<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Factor:<BR>\n" );
document.write( "(x+2)^2 + y^2 = 12<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Center at (-2,0)<BR>\n" );
document.write( "Radius: sqrt(12) = 2sqrt(3)<BR>\n" );
document.write( "==================================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );