document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=59247>Question 59247</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0321279085/algebrahomeworkh>College Algebra with Modeling and Visualization</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Can you please help me solve this problem step by step?<BR>\n" );
document.write( "Find all zeros of f(x).<BR>\n" );
document.write( "f(x)=x4+5x2+4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #40606 by </B><A HREF=/tutors/aboutme.mpl?userid=venugopalramana><B>venugopalramana(3286)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=venugopalramana><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.geocities.com/venugopalramana/FREE_MATHS_ASSISTANCE.html valign=middle><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=40606\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> SEE THE FOLLOWING EXAMPLE AND TRY.IF STILL I DIFFICULTY PLEASE COME BACK<BR>\n" );
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document.write( "solve x^4-8x^2+7=0<BR>\n" );
document.write( "X^4-X^2-7X^2+7=0<BR>\n" );
document.write( "X^2(X^2-1)-7(X^2-1)=0<BR>\n" );
document.write( "(X^2-1)(X^2-7)=0<BR>\n" );
document.write( "(X-1)(X+1)(X-SQRT7)(X+SQRT7)=0<BR>\n" );
document.write( "X=1..........OR<BR>\n" );
document.write( "X=-1....OR<BR>\n" );
document.write( "X=SQRT7........OR<BR>\n" );
document.write( "X=-SQRT7 \r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );