document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=43925>Question 43925</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Decide whether or not each equation has a circle as its graph.  If it does give the center and the radius.\r<BR>\n" );
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document.write( "x^2+8x+y^2-6y+16=0\r<BR>\n" );
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document.write( "acrown1@umbc.edu </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #28837 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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/cgi-bin/show-face.mpl?user=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=28837\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Okay from<BR>\n" );
document.write( "x^2 + 8x + y^2 - 6y + 16 = 0<BR>\n" );
document.write( "we complete the squares twice and get<BR>\n" );
document.write( "x^2 + 8x + 16 + y^2 - 6y + 9 + 16 = 0 + 16 + 9<BR>\n" );
document.write( "now simplify and form squares and get<BR>\n" );
document.write( "(x + 4)^2 + (y - 3)^2 = 9<BR>\n" );
document.write( "So this is a circle with center at (-4, 3) and radius 3. </SPAN>\n" );
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