document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=255805>Question 255805</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solving polynomial equations!\r<BR>\n" );
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document.write( "2t^4-5t^2+3=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #188044 by </B><A HREF=/tutors/aboutme.mpl?userid=Greenfinch><B>Greenfinch(383)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Greenfinch><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=Greenfinch><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=188044\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Think of this as a quadratic in t^2. Call s = t^2<BR>\n" );
document.write( "Then the equation becomes 2s^2 - 5s +3 = 0<BR>\n" );
document.write( "Which factorises to (2s -  3)(s -  1) =0<BR>\n" );
document.write( "So s = 3/2 or 1<BR>\n" );
document.write( "Thus t^2 = s  so t^2 = 3/2 or 1<BR>\n" );
document.write( "so t = +/- sqrt (3/2) or +/- 1 </SPAN>\n" );
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