document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1047624>Question 1047624</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello,\r<BR>\n" );
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document.write( "I need help with the following problem:\r<BR>\n" );
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document.write( "For what integer <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+n+ ALIGN=MIDDLE  ALT=\"+n+\"   DISABLED_style= \"max-width:90%; height:auto;\" > is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%2810%5En-1%29%2810%5En%2B1%29+ ALIGN=MIDDLE  ALT=\"+%2810%5En-1%29%2810%5En%2B1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 999,999,999,999?<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 #663145 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=663145\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (10^n-1)(10^n+1) = 999,999,999,999<BR>\n" );
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document.write( "10^(2n)-1 = 1,000,000,000,000-1<BR>\n" );
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document.write( "10^(2n) = 10^12<BR>\n" );
document.write( "2n = 12<BR>\n" );
document.write( "n = 6<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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