document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1007611>Question 1007611</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i am having trouble with my complex numbers homework. the problem is -7(-4i)(-5-3i) could you explain it to me ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #623470 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=623470\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> i am having trouble with my complex numbers homework. the problem is -7(-4i)(-5-3i) could you explain it to me ?<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "-7(-4i)(-5-3i)<BR>\n" );
document.write( "--<BR>\n" );
document.write( "Step 1, say what you want to do.<BR>\n" );
document.write( "If you want to multiply that:<BR>\n" );
document.write( "---<BR>\n" );
document.write( "-7(-4i)(-5-3i)<BR>\n" );
document.write( "-7*(-4i) = 28i<BR>\n" );
document.write( "---<BR>\n" );
document.write( "--> 28i*(-5-3i)<BR>\n" );
document.write( "------<BR>\n" );
document.write( "= -140i - 84i^2<BR>\n" );
document.write( "i^2 = -1<BR>\n" );
document.write( "--> -140i + 84<BR>\n" );
document.write( "= 84 - 140i<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );