document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=340226>Question 340226</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The product of page numbers on two facing pages of a book is 420.  Find the page numbers.<BR>\n" );
document.write( "x(x + 1) = 420 is as far as I am.... Help!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #243785 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=243785\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Okay, you're good so far...so from<BR>\n" );
document.write( "x(x + 1) = 420<BR>\n" );
document.write( "we get<BR>\n" );
document.write( "x^2 + x = 420<BR>\n" );
document.write( "x^2 + x - 420 = 0<BR>\n" );
document.write( "now we can solve this by factoring...<BR>\n" );
document.write( "we have to find two numbers which multiply to make 420, yet have a difference of one...well 21 and 20 fit nicely...so we get<BR>\n" );
document.write( "(x + 21)(x - 20) = 420<BR>\n" );
document.write( "and<BR>\n" );
document.write( "x = -21 and x = 20  well, we can't have negative page numbers, sooooo...<BR>\n" );
document.write( "the pages are 20 and 21 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );