document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=464012>Question 464012</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In solving the equation (x + 3)(x – 3) = -8, Eric stated that the solution would be<BR>\n" );
document.write( "x + 3 = -8 => x = -11<BR>\n" );
document.write( "or<BR>\n" );
document.write( "(x – 3) = -8 => x = -5<BR>\n" );
document.write( "However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please help Eric to understand better; solve the problem yourself, and explain your reasoning.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #317836 by </B><A HREF=/tutors/aboutme.mpl?userid=algebrahouse.com><B>algebrahouse.com(1659)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=algebrahouse.com><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=algebrahouse.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=317836\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Obviously, Eric should've used: <a  rel=nofollow HREF= \"http://www.algebrahouse.com/\" target = \"_blank\">www.algebrahouse.com</a>\r<BR>\n" );
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document.write( "He needs to multiply the (x + 3)(x - 3) first, using the foil method.<BR>\n" );
document.write( "He's thinking of if they were equal to 0.\r<BR>\n" );
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document.write( "(x + 3)(x - 3) = -8<BR>\n" );
document.write( "x² - 9 = -8 {used foil method}<BR>\n" );
document.write( "x² = 1 {added 1 to both sides}<BR>\n" );
document.write( "x = ±1 {took the square root of both sides}<BR>\n" );
document.write( "<br>For more help from me, visit: <a  rel=nofollow HREF= \"http://www.algebrahouse.com/\" target = \"_blank\">www.algebrahouse.com</a><br><br><br> </SPAN>\n" );
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