document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=723120>Question 723120</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Question: Write each of the following as a polynomial in descending powers of its variable.\r<BR>\n" );
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document.write( "13	  9x(x + 2)  My answer: 9x^2+18<BR>\n" );
document.write( "14	  (9x + 1)(x + 2)<BR>\n" );
document.write( "15	  (x – 7)(x + 9)<BR>\n" );
document.write( "16	  (x - 5)(x + 5)<BR>\n" );
document.write( "17	  (4x – 1)2<BR>\n" );
document.write( "18	  (x3 + x)2\r<BR>\n" );
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document.write( "Note: It says use the \"FOIL\" for problems 14-18. But Im not sure how to do that! Help please? Thank you so much!\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #443039 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=443039\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write each of the following as a polynomial in descending powers of its variable.<BR>\n" );
document.write( " 13 9x(x + 2) My answer: 9x^2+18<BR>\n" );
document.write( " 14 (9x + 1)(x + 2)<BR>\n" );
document.write( " 15 (x – 7)(x + 9)<BR>\n" );
document.write( " 16 (x - 5)(x + 5)<BR>\n" );
document.write( " 17 (4x – 1)2<BR>\n" );
document.write( " 18 (x3 + x)2 <BR>\n" );
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document.write( " 13 9x(x + 2) My answer: 9x^2+18 *** = 9x^2 + 18x<BR>\n" );
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document.write( " 14 (9x + 1)(x + 2)<BR>\n" );
document.write( "FOIL is First, Outside, Inside, Last<BR>\n" );
document.write( "= 9x^2 + 18x + x + 2<BR>\n" );
document.write( "= 9x^2 + 19x + 2<BR>\n" );
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document.write( "15 (x – 7)(x + 9)<BR>\n" );
document.write( "= x^2 + 2x - 63<BR>\n" );
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document.write( "You do the rest.  email via the Thank You note for help or to check your work.<BR>\n" );
document.write( " 16 (x - 5)(x + 5)<BR>\n" );
document.write( " 17 (4x – 1^)2<BR>\n" );
document.write( " 18 (x3 + x^)2 <BR>\n" );
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