document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=398877>Question 398877</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello. Can you please help me?<BR>\n" );
document.write( "I need to solve this equation..\r<BR>\n" );
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document.write( "x^6-9x^4-x^2+9=0\r<BR>\n" );
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document.write( "Could you please show me the steps to solving this problem so that I can understand it? thanks!\r<BR>\n" );
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document.write( "Thank you!\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #282544 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=282544\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> given:<BR>\n" );
document.write( "x^6-9x^4-x^2+9=0 <BR>\n" );
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document.write( "group terms:<BR>\n" );
document.write( "(x^6-9x^4)-(x^2-9)=0 <BR>\n" );
document.write( "x^4(x^2-9)-(x^2-9)=0 <BR>\n" );
document.write( "(x^2-9)(x^4-1)=0 <BR>\n" );
document.write( "But, both of the terms are \"difference of squares\" so:<BR>\n" );
document.write( "(x-3)(x+3)(x^2-1)(x^2+1)<BR>\n" );
document.write( "One more:<BR>\n" );
document.write( "(x-3)(x+3)(x-1)(x+1)(x^2+1)<BR>\n" );
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