document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=788159>Question 788159</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If (a,8) is a point on the graph y=x^2+2x, what is a? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #478430 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=478430\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=8 and x=a, but a is unknown.\r<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2B2x=x%28x%2B2%29=8 ALIGN=MIDDLE  ALT=\"x%5E2%2B2x=x%28x%2B2%29=8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "or more useful to work with,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E2%2B2x-8=0 ALIGN=MIDDLE  ALT=\"x%5E2%2B2x-8=0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B4%29%28x-2%29=0 ALIGN=MIDDLE  ALT=\"%28x%2B4%29%28x-2%29=0\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Obvious values for x are -4 or 2.<BR>\n" );
document.write( "a is either -4 or positive 2. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );