document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=4715>Question 4715</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find two complex numbers that have a sum or -6 and a product of 90 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #2213 by </B><A HREF=/tutors/aboutme.mpl?userid=khwang><B>khwang(438)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=khwang><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=2213\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Let these two numbers be the roots of a quadratic equation.\r<BR>\n" );
document.write( "\n" );
document.write( " Then the equation should be x^2 + 6x +90 = 0.\r<BR>\n" );
document.write( "\n" );
document.write( " By quadratic formula, we have x = -3 + sqrt(9-90) = -3 + 9i <BR>\n" );
document.write( " or   -3 - 9i.<BR>\n" );
document.write( " Thus, we get these two required complex numbers.\r<BR>\n" );
document.write( "\n" );
document.write( " Kenny\r<BR>\n" );
document.write( "\n" );
document.write( "  </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );