document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=972349>Question 972349</A>: <I><SPAN STYLE=\"word-break: break-all;\"> . Find the center and radius of the circle whose equation is x2 + 2x + y2 – 4y + 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 #594686 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=594686\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the center and radius of the circle whose equation is <BR>\n" );
document.write( "x2 + 2x + y2 – 4y + 1 = 0.<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Complete the square on the x and on the y terms::<BR>\n" );
document.write( "x^2 + 2x + 1 + y^2 - 4y + 4 = -1 + 1 + 4<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Factor::<BR>\n" );
document.write( "(x+1)^2 + (y-2)^2 = 4<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "Center = (-1,2)<BR>\n" );
document.write( "Radius = sqrt(4) = 2<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );