document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=680487>Question 680487</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you foil complex numbers with conjugate that have been added to a variable?! Ex.\r<BR>\n" );
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document.write( "(x-7-5i)(x-7+5i)\r<BR>\n" );
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document.write( "Please do this step by step...the answer is x^2-14x+74  WHERE DOES THAT COME FROM? Ive been working on learning this for hours and I cant find it anywhere! Thanks! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #422352 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=422352\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How do you foil complex numbers with conjugate that have been added to a variable?! Ex.\r<BR>\n" );
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document.write( "(x-7-5i)(x-7+5i)\r<BR>\n" );
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document.write( "Please do this step by step...the answer is x^2-14x+74  WHERE DOES THAT COME FROM? Ive been working on learning this for hours and I cant find it anywhere!<BR>\n" );
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document.write( "Why do expect to find it somewhere?  You have to multiply it.<BR>\n" );
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document.write( "(x-7-5i)(x-7+5i) = ((x+7) - 5i)*((x+7) + 5i)<BR>\n" );
document.write( "= (x+7)^2 - (5i)^2<BR>\n" );
document.write( "= x^2 + 14x + 49 + 25<BR>\n" );
document.write( "= x^2 + 14x + 74\r<BR>\n" );
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