document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=387969>Question 387969</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x^4+8x^2=9 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #274270 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=274270\">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%2B8x%5E2=9 ALIGN=MIDDLE  ALT=\"x%5E4%2B8x%5E2=9\"   DISABLED_style= \"max-width:90%; height:auto;\" >----><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E4%2B8x%5E2-9+=+0 ALIGN=MIDDLE  ALT=\"x%5E4%2B8x%5E2-9+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >----><IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%5E2%2B9%29%28x%5E2+-+1%29+=+0 ALIGN=MIDDLE  ALT=\"%28x%5E2%2B9%29%28x%5E2+-+1%29+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  Then either <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+%2B+9+=+0 ALIGN=MIDDLE  ALT=\"x%5E2+%2B+9+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2+-+1+=+0 ALIGN=MIDDLE  ALT=\"x%5E2+-+1+=+0\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  From the first we get no real solutions.  From the second, we get x = 1, -1. </SPAN>\n" );
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