document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=687969>Question 687969</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help....\r<BR>\n" );
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document.write( "In the example below give the centre and radius of the circle.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X%5E2%2By%5E2-2x-6y%2B1=0 ALIGN=MIDDLE  ALT=\"X%5E2%2By%5E2-2x-6y%2B1=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #425434 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=425434\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In the example below give the centre and radius of the circle.<BR>\n" );
document.write( "x^2+y^2-2x-6y+1=0<BR>\n" );
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( "complete the squares:<BR>\n" );
document.write( "x^2-2x+y^2-6y+1=0<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" );
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