document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=395851>Question 395851</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the product of the complex numbers (3+i) and (3-i)?\r<BR>\n" );
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document.write( "A) 8<BR>\n" );
document.write( "B) 10<BR>\n" );
document.write( "C) 9-i<BR>\n" );
document.write( "D) 10-6i </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #280926 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=280926\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the product of the complex numbers <BR>\n" );
document.write( "(3+i) and (3-i)<BR>\n" );
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document.write( "Use FOIL:<BR>\n" );
document.write( "F: 3*3 = 9<BR>\n" );
document.write( "O: 3*-i = -3i<BR>\n" );
document.write( "I; 3*i  =  3i<BR>\n" );
document.write( "L: i*-i = i^4 = 1<BR>\n" );
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document.write( "Combine to get 9+1 = 10<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "A) 8<BR>\n" );
document.write( "B) 10<BR>\n" );
document.write( "C) 9-i<BR>\n" );
document.write( "D) 10-6i<BR>\n" );
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