document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=236849>Question 236849</A>: <I><SPAN STYLE=\"word-break: break-all;\"> givn one zero, find all other zeros that can be either real or complex.<BR>\n" );
document.write( "p(x)=x^4-x^3+7x^2-9x-18 (3i is a zero) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #174216 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=174216\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> p(x)=x^4-x^3+7x^2-9x-18 (3i is a zero)<BR>\n" );
document.write( "if x=3i then x=-3i the 2nd zero.<BR>\n" );
document.write( "(x-3i)(x+3i)=0<BR>\n" );
document.write( "x^2+9=0<BR>\n" );
document.write( "(x^4-x^3+7x^2-9x-18)/(x^2+9)<BR>\n" );
document.write( "=x^2-x-2 long division<BR>\n" );
document.write( "x^2-x-2=0<BR>\n" );
document.write( "(x-2)(x+1)=0<BR>\n" );
document.write( "x=2, x=-1 the 3rd and 4th zeros.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );