document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=480790>Question 480790</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x^2+y=18<BR>\n" );
document.write( "-3x-y=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #329200 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=329200\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^2+y=18<BR>\n" );
document.write( "y= 18-x^2\r<BR>\n" );
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document.write( "-3x-y=0<BR>\n" );
document.write( "substitute y in the second equation<BR>\n" );
document.write( "-3x-(18-x^2)=0<BR>\n" );
document.write( "-3x-18x+x^2=0\r<BR>\n" );
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document.write( "x^2-3x-18=0<BR>\n" );
document.write( "x^2-6x+3x-18=0<BR>\n" );
document.write( "x(x-6)-3(x-6)=0<BR>\n" );
document.write( "(x-6)(x-3) =0\r<BR>\n" );
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document.write( "x= 6 OR 3<BR>\n" );
document.write( "when x=6, y=-18. (6,-18)<BR>\n" );
document.write( "when x=3,y=9. (3,9) </SPAN>\n" );
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