document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=517523>Question 517523</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need to find the excluded variables for this expression= (y^2+5y-6)/(y^2-8y+7) I've already simplified it into (y+6)/(y-7) but i'm having trouble finding the excluded variables </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #344811 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=344811\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> excluded values are those which result in undefined results (usually, division by zero)\r<BR>\n" );
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document.write( "if y = 7, then your simplified denominator is zero ___ this is excluded\r<BR>\n" );
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document.write( "even though you canceled the y-1 factors, y = 1 is an excluded value because there is a \"hole\" in the graph there </SPAN>\n" );
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