document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=903854>Question 903854</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I factor this?\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5E4+-13x%5E2+%2B+36 ALIGN=MIDDLE  ALT=\"+x%5E4+-13x%5E2+%2B+36\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The answer is (x -2) (x + 2) (x -3) (x + 3)\r<BR>\n" );
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document.write( "This seems to be a case of difference of squares, but I don't know how to factor it with a 4th degree.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #548336 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=548336\">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=x%5E4-13x%5E2%2B36 ALIGN=MIDDLE  ALT=\"x%5E4-13x%5E2%2B36\"   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=x%5E4-4x%5E2-9x%5E2%2B36 ALIGN=MIDDLE  ALT=\"x%5E4-4x%5E2-9x%5E2%2B36\"   DISABLED_style= \"max-width:90%; height:auto;\" > -4 and -9 both add to -13 and multiply to 36\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E4-4x%5E2%29%2B%28-9x%5E2%2B36%29 ALIGN=MIDDLE  ALT=\"%28x%5E4-4x%5E2%29%2B%28-9x%5E2%2B36%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=x%5E2%28x%5E2-4%29%2B%28-9x%5E2%2B36%29 ALIGN=MIDDLE  ALT=\"x%5E2%28x%5E2-4%29%2B%28-9x%5E2%2B36%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=x%5E2%28x%5E2-4%29-9%28x%5E2-4%29 ALIGN=MIDDLE  ALT=\"x%5E2%28x%5E2-4%29-9%28x%5E2-4%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=%28x%5E2-9%29%28x%5E2-4%29 ALIGN=MIDDLE  ALT=\"%28x%5E2-9%29%28x%5E2-4%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=%28x-3%29%28x%2B3%29%28x%5E2-4%29 ALIGN=MIDDLE  ALT=\"%28x-3%29%28x%2B3%29%28x%5E2-4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Difference of squares rule\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-3%29%28x%2B3%29%28x-2%29%28x%2B2%29 ALIGN=MIDDLE  ALT=\"%28x-3%29%28x%2B3%29%28x-2%29%28x%2B2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Difference of squares rule\r<BR>\n" );
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document.write( "Note: the order of the factors doesn't matter. </SPAN>\n" );
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