document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=204232>Question 204232</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 8x^(4)-6x^(2)-5=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #154197 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=154197\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 8x^(4)-6x^(2)-5=0<BR>\n" );
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document.write( "Factor the left side:<BR>\n" );
document.write( "8x^4 - 10x^2 + 4x^2 - 5 = 0<BR>\n" );
document.write( "Factor the 1st 2 and the last two terms separately to get:<BR>\n" );
document.write( "2x^2(4x^2-5)+ (4x^2-5) = 0<BR>\n" );
document.write( "(4x^2-5)(2x^2+1) = 0<BR>\n" );
document.write( "Solve for \"x\":<BR>\n" );
document.write( "4x^2 = 5 or 2x^2+1 = 0<BR>\n" );
document.write( "x^2 = 5/4 or x^2 = -1/2<BR>\n" );
document.write( "x = +/-sqrt(5/4) or x = +-isqrt(1/2)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );