document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=437032>Question 437032</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The square of a positive number minus the original number equals 72. What is the original number?<BR>\n" );
document.write( "		6<BR>\n" );
document.write( "		7<BR>\n" );
document.write( "		8<BR>\n" );
document.write( "		9<BR>\n" );
document.write( "		10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #302303 by </B><A HREF=/tutors/aboutme.mpl?userid=oberobic><B>oberobic(2304)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oberobic><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=302303\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x = a positive number<BR>\n" );
document.write( "The square of the positive number = x^2.<BR>\n" );
document.write( "x^2 minus the original number = x^2 - x.<BR>\n" );
document.write( "x^2 -x = 72 (Given)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Subtract 72 from both sides<BR>\n" );
document.write( "x^2 -x - 72 = 0<BR>\n" );
document.write( "Factor<BR>\n" );
document.write( "(x - 9)(x + 8) = 0<BR>\n" );
document.write( "So,<BR>\n" );
document.write( "x = 9<BR>\n" );
document.write( "or <BR>\n" );
document.write( "x = -8<BR>\n" );
document.write( "But, we're told it is a positive number, which mean<BR>\n" );
document.write( "x = 9<BR>\n" );
document.write( "Always check your answer!<BR>\n" );
document.write( "x^2 - x = 81 - 9<BR>\n" );
document.write( "x^2 - x = 72<BR>\n" );
document.write( "True<BR>\n" );
document.write( "Be sure to state your answer.<BR>\n" );
document.write( "The original number is 9.<BR>\n" );
document.write( "Done. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );