document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=608504>Question 608504</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve for x by factoring completely:  x^4 - 1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #383245 by </B><A HREF=/tutors/aboutme.mpl?userid=flame8855><B>flame8855(424)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=flame8855><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=flame8855><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=383245\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (x^2-1)(x^2+1)<BR>\n" );
document.write( "x =+- 1<BR>\n" );
document.write( "x^2+1=0<BR>\n" );
document.write( "x^2=-1 = i^2<BR>\n" );
document.write( "x = +-i </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );