document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=834485>Question 834485</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (a-bi) (a+bi)\r<BR>\n" );
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document.write( "The i's are imaginary,  you have to multiply,   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #503036 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=503036\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (a-bi)(a+bi)\r<BR>\n" );
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document.write( "a(a+bi)-bi(a+bi)\r<BR>\n" );
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document.write( "a(a)+a(bi)-bi(a)-bi(bi)\r<BR>\n" );
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document.write( "a^2+abi-abi-(bi)^2\r<BR>\n" );
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document.write( "a^2+abi-abi-b^2(i^2)\r<BR>\n" );
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document.write( "a^2+abi-abi-b^2(-1)\r<BR>\n" );
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document.write( "a^2+abi-abi+b^2\r<BR>\n" );
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document.write( "a^2+b^2\r<BR>\n" );
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document.write( "So,\r<BR>\n" );
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document.write( "(a-bi)(a+bi) = <font color=\"red\">a^2+b^2</font> </SPAN>\n" );
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