document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=852878>Question 852878</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need to solve this and I am lost.  (-y-3x)(-y+3x) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #513726 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=513726\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-y-3x%29%28-y%2B3x%29 ALIGN=MIDDLE  ALT=\"%28-y-3x%29%28-y%2B3x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-y%28-y%2B3x%29-3x%28-y%2B3x%29 ALIGN=MIDDLE  ALT=\"-y%28-y%2B3x%29-3x%28-y%2B3x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Use the idea that <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a%2Bb%29%28c%2Bd%29=a%28c%2Bd%29%2Bb%28c%2Bd%29 ALIGN=MIDDLE  ALT=\"%28a%2Bb%29%28c%2Bd%29=a%28c%2Bd%29%2Bb%28c%2Bd%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "So <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-y-3x%29%28-y%2B3x%29 ALIGN=MIDDLE  ALT=\"%28-y-3x%29%28-y%2B3x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > expands and simplifies to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%5E2-9x%5E2 ALIGN=MIDDLE  ALT=\"y%5E2-9x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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