document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=546530>Question 546530</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the raius of the circle of x^2+4X+y^2+8y=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #361139 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=361139\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the raius of the circle of x^2+4X+y^2+8y=0<BR>\n" );
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document.write( "Standard form of equation for a circle: (x-h)^2+(y-k)^2=r^2, (h,k)=(x,y) coordinates of center, r=radius<BR>\n" );
document.write( "..<BR>\n" );
document.write( "x^2+4x+y^2+8y=0<BR>\n" );
document.write( "complete the square<BR>\n" );
document.write( "(x^2+4x+4)+(y^2+8y+16)-4-16=0<BR>\n" );
document.write( "(x+2)^2+(y+4)^2=20<BR>\n" );
document.write( "This is an equation for a circle with center at (-2,-4) <BR>\n" );
document.write( "r^2=20<BR>\n" );
document.write( "radius=&#8730;20 </SPAN>\n" );
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