document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=197563>Question 197563</A>: <I><SPAN STYLE=\"word-break: break-all;\"> ADD<BR>\n" );
document.write( "(9/z-4 )+ (9/z+4) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #148151 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=148151\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F%28z-4%29%2B+9%2F%28z%2B4%29 ALIGN=MIDDLE  ALT=\"9%2F%28z-4%29%2B+9%2F%28z%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Since you are trying to add fractions, you must have the same denominator.<BR>\n" );
document.write( "A \"common denominator\" is (z-4)(z+4)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F%28z-4%29%2B+9%2F%28z%2B4%29 ALIGN=MIDDLE  ALT=\"9%2F%28z-4%29%2B+9%2F%28z%2B4%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%289%2F%28z-4%29%29%28%28z%2B4%29%2F%28z%2B4%29%29+%2B+%289%2F%28z%2B4%29%29%28%28z-4%29%2F%28z-4%29%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%289%28z%2B4%29%2F%28%28z-4%29%28z%2B4%29%29%29+%2B+%289%28z-4%29%2F%28%28z-4%29%28z%2B4%29%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%289z%2B36%2B9z-36%29%2F%28%28z-4%29%28z%2B4%29%29%29+ ALIGN=MIDDLE  ALT=\"%28%289z%2B36%2B9z-36%29%2F%28%28z-4%29%28z%2B4%29%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%2818z%29%2F%28%28z-4%29%28z%2B4%29%29%29+ ALIGN=MIDDLE  ALT=\"%28%2818z%29%2F%28%28z-4%29%28z%2B4%29%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%2818z%29%2F%28z%5E2-16%29%29+ ALIGN=MIDDLE  ALT=\"%28%2818z%29%2F%28z%5E2-16%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );