document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=35707>Question 35707</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0130087459/algebrahomeworkh>Introductory algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> x^2+xy-y^2<BR>\n" );
document.write( "__________<BR>\n" );
document.write( "  x+y\r<BR>\n" );
document.write( "\n" );
document.write( "when x=6 and y=-2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #23050 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=23050\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Let us evaluate<BR>\n" );
document.write( "(x^2 + xy - y^2) / (x + y) when x = 6 and y = -2<BR>\n" );
document.write( "The technique is to merely to plug in 6 for every x and -2 for every y...we get<BR>\n" );
document.write( "(36 + (-12) - 4) / (6 - 2)=<BR>\n" );
document.write( "20 / 4 =<BR>\n" );
document.write( "5 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );