document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=257440>Question 257440</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am confused about simplfying by removing factors of one when a lot of letters are used, for example:<BR>\n" );
document.write( "z^2-12z+32/z^2+z-20\r<BR>\n" );
document.write( "\n" );
document.write( "Help please! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #189366 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=189366\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> z^2-12z+32/z^2+z-20 <BR>\n" );
document.write( "Factor the NUM and DEN<BR>\n" );
document.write( "= (z-8)*(z-4)/(z+5)*(z-4)<BR>\n" );
document.write( "Both NUM and DEN have (z-4), so cancel them.<BR>\n" );
document.write( "= (z-8)/(z+5)<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "I don't know what \"factors of one\" means.  Dividing by one doesn't change anything.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );