document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=262879>Question 262879</A>: <I><SPAN STYLE=\"word-break: break-all;\"> When finding the volume of a box;   (20-2x)(16-2x)(x) 1st term(20times16) = 320\r<BR>\n" );
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document.write( "                                                     3ed term(-2xtimes-2x)=+4x^2<BR>\n" );
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document.write( "  How come the  2ed term is -72x???   I don't see the math.  thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #193646 by </B><A HREF=/tutors/aboutme.mpl?userid=palanisamy><B>palanisamy(496)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=palanisamy><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=193646\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (20-2x)(16-2x)(x)= (320-40x-32x+4x^2)*x<BR>\n" );
document.write( "                 = (320-72x+4x^2)*x<BR>\n" );
document.write( "                 = 320x-72x^2+4x^3 </SPAN>\n" );
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