document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=700270>Question 700270</A>: <I><SPAN STYLE=\"word-break: break-all;\"> x^4=1<BR>\n" );
document.write( "how do you solve this  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #431749 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16949)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=431749\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^4=1<BR>\n" );
document.write( "x^4-1=0\r<BR>\n" );
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document.write( "(x^2+1)(x^2-1)=0\r<BR>\n" );
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document.write( "(x^2+1)(x+1)(x-1)=0\r<BR>\n" );
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document.write( "If (x^2+1)=0<BR>\n" );
document.write( "x^2=-1<BR>\n" );
document.write( "x= sqrt(-1)=i\r<BR>\n" );
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document.write( "OR x= -1 OR +1 </SPAN>\n" );
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