document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=747934>Question 747934</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Subtract and simplify<BR>\n" );
document.write( "(4-i)-(7+4i)<BR>\n" );
document.write( "I know that I need to use FOIL but I get the answer all wrong. Can someone help me understand?<BR>\n" );
document.write( "Thanks,<BR>\n" );
document.write( "Cassie </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #455238 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=455238\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Subtract and simplify<BR>\n" );
document.write( "(4-i)-(7+4i)<BR>\n" );
document.write( "I know that I need to use FOIL but I get the answer all wrong.<BR>\n" );
document.write( "----<BR>\n" );
document.write( "No, FOIL is used to multiply two binomials.<BR>\n" );
document.write( "Yours is a subtraction problem.<BR>\n" );
document.write( "-----<BR>\n" );
document.write( "= 4-i-7-4i<BR>\n" );
document.write( "----<BR>\n" );
document.write( "= -3-5i<BR>\n" );
document.write( "=============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );