document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=206912>Question 206912</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Multiply<BR>\n" );
document.write( "A.(2r-3s)(5r+7s)<BR>\n" );
document.write( "B.(h^2+6h-7)(2h^2+7h+10) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #156414 by </B><A HREF=/tutors/aboutme.mpl?userid=dlam5><B>dlam5(15)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dlam5><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=156414\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A.  (2r-3s)(5r+7s)\r<BR>\n" );
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document.write( "Using FOIL (First-Outers-Inner-Lasts)\r<BR>\n" );
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document.write( "Take FIRSTS;  (2r)*(5r)\r<BR>\n" );
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document.write( "10r^2  (note it is r-squared, becuase, r*r is r^2; this is a common error, so watch out!)\r<BR>\n" );
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document.write( "Take OUTERS: (7s)*(2r)\r<BR>\n" );
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document.write( "14rs\r<BR>\n" );
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document.write( "Take INNERS:  (-3s)(5r)<BR>\n" );
document.write( "-15rs\r<BR>\n" );
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document.write( "Then, ADD the outers and inners (because they are \"like terms\" in an equation, you MUST SIMPLIFY)\r<BR>\n" );
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document.write( "You get...  14rs + -15 rs = -(1)rs  or just -rs\r<BR>\n" );
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document.write( "Take LASTS:  -3s*7s\r<BR>\n" );
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document.write( "-21 s^2 (another \"squared\" to watch out for!)\r<BR>\n" );
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document.write( "Your final answer after making the puzzle...\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10r%5E2+-rs+-21s%5E2 ALIGN=MIDDLE  ALT=\"10r%5E2+-rs+-21s%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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