document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=211251>Question 211251</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3/(7z+5)\r<BR>\n" );
document.write( "\n" );
document.write( "Find all numbers for which the rational expression is undefined\r<BR>\n" );
document.write( "\n" );
document.write( "I can't remember how you do this, I think I have it at equaling -5/7 but I am unsure, cause I thought with these kinds of problems it always has more then one answer </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #159611 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=159611\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3/(7z+5) <BR>\n" );
document.write( "Find all numbers for which the rational expression is undefined <BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "It might have two answers if the denominator is a quadratic.<BR>\n" );
document.write( "---<BR>\n" );
document.write( "But yours has 7z+5 which cannot be zero.<BR>\n" );
document.write( "So you solve it for zero: <BR>\n" );
document.write( "7z+5=0<BR>\n" );
document.write( "z = -5/7<BR>\n" );
document.write( "That is the value z cannot have.<BR>\n" );
document.write( "===============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );