document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=268064>Question 268064</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a number is 72 less than its square.find all such numbers </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #196562 by </B><A HREF=/tutors/aboutme.mpl?userid=CharlesG2><B>CharlesG2(834)</B></A><img src=\"/images/stars/stars-11.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=CharlesG2><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=196562\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a number is 72 less than its square.find all such numbers\r<BR>\n" );
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document.write( "a number x\r<BR>\n" );
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document.write( "x^2 - 72 = x<BR>\n" );
document.write( "x^2 - x - 72 = 0<BR>\n" );
document.write( "(x + 8)(x-9) = 0 (foil: x^2 - 9x + 8x -72)<BR>\n" );
document.write( "x = -8 or x = 9\r<BR>\n" );
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