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 #478431 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=478431\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (a,8) is a point on the graph y=x^2+2x, what is a?\r<BR>\n" );
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document.write( "plug x=a and y=8\r<BR>\n" );
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document.write( "since (a,8) satisfies the equation \r<BR>\n" );
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document.write( "8=a^2+2a\r<BR>\n" );
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document.write( "a^2+2a-8=0\r<BR>\n" );
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document.write( "a^2+4a-2a-8=0\r<BR>\n" );
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document.write( "a(a+4)-2(a+4)=0\r<BR>\n" );
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document.write( "(a+4)(a-2)=0\r<BR>\n" );
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document.write( "a=-4 OR 2\r<BR>\n" );
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document.write( " </SPAN>\n" );
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