document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=118524>Question 118524</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (x - 10)(x + 10) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #86662 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=86662\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-10%29%28x%2B10%29 ALIGN=MIDDLE  ALT=\"%28x-10%29%28x%2B10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the given expression\r<BR>\n" );
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document.write( "Remember, when you FOIL an expression, you follow this procedure:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28highlight%28x%29-10%29%28highlight%28x%29%2B10%29 ALIGN=MIDDLE  ALT=\"%28highlight%28x%29-10%29%28highlight%28x%29%2B10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply the First terms:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%29%2A%28x%29=x%5E2 ALIGN=MIDDLE  ALT=\"%28x%29%2A%28x%29=x%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28highlight%28x%29-10%29%28x%2Bhighlight%2810%29%29 ALIGN=MIDDLE  ALT=\"%28highlight%28x%29-10%29%28x%2Bhighlight%2810%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply the Outer terms:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%29%2A%2810%29=10x ALIGN=MIDDLE  ALT=\"%28x%29%2A%2810%29=10x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2Bhighlight%28-10%29%29%28highlight%28x%29%2B10%29 ALIGN=MIDDLE  ALT=\"%28x%2Bhighlight%28-10%29%29%28highlight%28x%29%2B10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply the Inner terms:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-10%29%2A%28x%29=-10x ALIGN=MIDDLE  ALT=\"%28-10%29%2A%28x%29=-10x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2Bhighlight%28-10%29%29%28x%2Bhighlight%2810%29%29 ALIGN=MIDDLE  ALT=\"%28x%2Bhighlight%28-10%29%29%28x%2Bhighlight%2810%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply the Last terms:<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-10%29%2A%2810%29=-100 ALIGN=MIDDLE  ALT=\"%28-10%29%2A%2810%29=-100\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2B10x-10x-100 ALIGN=MIDDLE  ALT=\"x%5E2%2B10x-10x-100\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now collect every term to make a single expression\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-100 ALIGN=MIDDLE  ALT=\"x%5E2-100\"   DISABLED_style= \"max-width:90%; height:auto;\" > Now combine like terms\r<BR>\n" );
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document.write( "Answer:\r<BR>\n" );
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document.write( "So <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-10%29%28x%2B10%29 ALIGN=MIDDLE  ALT=\"%28x-10%29%28x%2B10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > foils and simplifies to  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2-100 ALIGN=MIDDLE  ALT=\"x%5E2-100\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "In other words, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x-10%29%28x%2B10%29=x%5E2-100 ALIGN=MIDDLE  ALT=\"%28x-10%29%28x%2B10%29=x%5E2-100\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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