document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=139544>Question 139544</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0201773414/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> t to the 4th power - 6t squared - 4= 0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #101743 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=101743\">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=t%5E4-6t%5E2-4=0 ALIGN=MIDDLE  ALT=\"t%5E4-6t%5E2-4=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Let <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=t%5E2 ALIGN=MIDDLE  ALT=\"x=t%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, then substitute into <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5E4-6t%5E2-4=0 ALIGN=MIDDLE  ALT=\"t%5E4-6t%5E2-4=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > giving <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-6x-4=0 ALIGN=MIDDLE  ALT=\"x%5E2-6x-4=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Solve the quadratic in x by either completing the square or using the quadradic formula (this one doesn't factor neatly).  You will find two roots in x.\r<BR>\n" );
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document.write( "Set each of these roots equal to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5E2 ALIGN=MIDDLE  ALT=\"t%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > and then solve each equation for t, remembering to consider the positive and negative root in each case.\r<BR>\n" );
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document.write( "You will end up with 4 roots, which was expected because you started with a quartic (4th degree) equation. </SPAN>\n" );
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