document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=164920>Question 164920</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780073533490/algebrahomeworkh>Elementary and Intermediate</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> 70.) Find all real and imaginary solutions.\r<BR>\n" );
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document.write( "b^4+13b^2+36=0<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #121539 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=121539\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> b^4+13b^2+36=0<BR>\n" );
document.write( "(b^2+9)(b^2+4)=0<BR>\n" );
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document.write( "b^2=-9<BR>\n" );
document.write( "b=+-sqrt(-9)<BR>\n" );
document.write( "b=3i, b=-3i<BR>\n" );
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document.write( "b^2=-4<BR>\n" );
document.write( "b=+-sqrt(-4)<BR>\n" );
document.write( "b=2i, b=-2i<BR>\n" );
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document.write( "Ed<BR>\n" );
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