document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=640023>Question 640023</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Could you help me with this problem about multiplying polynomials\r<BR>\n" );
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document.write( "(2x-7)(2x+7)\r<BR>\n" );
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document.write( "Thank you for your time and help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #402991 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=402991\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "Learn this pattern and you'll win each time. <BR>\n" );
document.write( "(2x-7)(2x+7) <BR>\n" );
document.write( "First multiply 2x and 2x to get:<BR>\n" );
document.write( "4x^2<BR>\n" );
document.write( "Now multiply 2x & 7 to get:<BR>\n" );
document.write( "+14x<BR>\n" );
document.write( "Then multiply -7 & 2x to get:<BR>\n" );
document.write( "-14x<BR>\n" );
document.write( "Finally multiply -7 and 7 to get:<BR>\n" );
document.write( "-49<BR>\n" );
document.write( "Put these together and we have:<BR>\n" );
document.write( "4x^2+14x-14x-49<BR>\n" );
document.write( "Notice the 14x and -14x become 0 so the result is:<BR>\n" );
document.write( "4x^2-49<BR>\n" );
document.write( "Make sense?<BR>\n" );
document.write( "RJ<BR>\n" );
document.write( "www.math-unlock.com </SPAN>\n" );
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