document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=725420>Question 725420</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How is this question done?<BR>\n" );
document.write( "   x8 -1296y4<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #444154 by </B><A HREF=/tutors/aboutme.mpl?userid=KMST><B>KMST(5328)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=KMST><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=KMST><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=444154\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To start, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E8-1296y%5E4 ALIGN=MIDDLE  ALT=\"x%5E8-1296y%5E4\"   DISABLED_style= \"max-width:90%; height:auto;\" > can be factored as a difference of squares.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E8=%28x%5E4%29%5E2 ALIGN=MIDDLE  ALT=\"x%5E8=%28x%5E4%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1296y%5E4=%2836y%5E2%29%5E2 ALIGN=MIDDLE  ALT=\"1296y%5E4=%2836y%5E2%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "You must have been told that<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5E2-b%5E2=%28a-b%29%28a%2Bb%29 ALIGN=MIDDLE  ALT=\"a%5E2-b%5E2=%28a-b%29%28a%2Bb%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > where a and b can be any expression, so<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E8-1296y%5E4=%28x%5E4%2B36y%5E2%29%28x%5E4-36y%5E2%29 ALIGN=MIDDLE  ALT=\"x%5E8-1296y%5E4=%28x%5E4%2B36y%5E2%29%28x%5E4-36y%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E4%2B36y%5E2 ALIGN=MIDDLE  ALT=\"x%5E4%2B36y%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > cannot be factored using just real numbers,<BR>\n" );
document.write( "but <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E4-36y%5E2 ALIGN=MIDDLE  ALT=\"x%5E4-36y%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > is a difference of squares, so<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E4-36y%5E2=%28x%5E2%2B6y%29%28x%5E2-6y%29 ALIGN=MIDDLE  ALT=\"x%5E4-36y%5E2=%28x%5E2%2B6y%29%28x%5E2-6y%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " <BR>\n" );
document.write( "For an answer, you should just write:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E8-1296y%5E4=%28x%5E4%2B36y%5E2%29%28x%5E4-36y%5E2%29=highlight%28%28x%5E4%2B36y%5E2%29%28x%5E2%2B6y%29%28x%5E2-6y%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );