document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=762012>Question 762012</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the complex zeros of the following polynomial. Write f in factored form. \r<BR>\n" );
document.write( "\n" );
document.write( "f(x)=x^4+x^3+7x^2+9x-18 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #463891 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=463891\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the complex zeros of the following polynomial. Write f in factored form. <BR>\n" );
document.write( "f(x)=x^4+x^3+7x^2+9x-18<BR>\n" );
document.write( "***<BR>\n" );
document.write( "Use Rational Roots Theorem\r<BR>\n" );
document.write( "\n" );
document.write( "...0...|....1......1......7......9....-18<BR>\n" );
document.write( "...1...|....1......2......9.....18......0 (1 is a root)<BR>\n" );
document.write( "===================<BR>\n" );
document.write( "....0..|....1......2......9.....18<BR>\n" );
document.write( "..-1..|....1......1......8.....10<BR>\n" );
document.write( "..-2..|....1......0......9......0 (-2 is a root)<BR>\n" );
document.write( "f(x)=(x-1)(x+2)(x^2+9)<BR>\n" );
document.write( "x^2+9=0<BR>\n" );
document.write( "x=±&#8730;-9=±3i<BR>\n" );
document.write( "f(x)=(x-1)(x+2)(x+3i)(x-3i) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );