document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=694095>Question 694095</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I don't understand how to preform the operations with complex numbers like with;<BR>\n" );
document.write( "(6-5i)(4-9i) and also like; please help, I need to get my grade back to a B by tmoorrow...<BR>\n" );
document.write( "2+3i/<BR>\n" );
document.write( "4-5i </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #427722 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=427722\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (6-5i)(4-9i) <BR>\n" );
document.write( "Use FOIL:<BR>\n" );
document.write( "F: 6*4 = 24<BR>\n" );
document.write( "O:6*-91 = -54i<BR>\n" );
document.write( "I:-5i*4 = -20i<BR>\n" );
document.write( "L:-5i*-9i = -45<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Combine to get:<BR>\n" );
document.write( "-21 -74i<BR>\n" );
document.write( "====================\r<BR>\n" );
document.write( "\n" );
document.write( "(2+3i)/(4-5i)<BR>\n" );
document.write( "----<BR>\n" );
document.write( "Multiply numerator and denominator by (4+5i) to get:<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "= [(2+3i)(4+5i)]/[(4-5i)(4+5i)]<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "= [8-15 + 21i+10i] / [16+25]<BR>\n" );
document.write( "------<BR>\n" );
document.write( "= [-7+31i]/41<BR>\n" );
document.write( "=====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );