document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=470694>Question 470694</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Let x be defined as x= x^2 - x for all values of x. If a = a-2, what is the value of a?\r<BR>\n" );
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document.write( "The answer is 3/2, but I do not understand how they got the answer.  Please help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #323300 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=323300\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I assume you are defining a function (use f(x)) because x is not equal to x^2 - x for all x, and a can never equal a-2. If f(a) = a-2, we simply solve for a by replacing f(a):\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE f(a) = a-2\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE a^2 - a = a - 2\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE a^2 - 2a + 2 = 0\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE a = \frac{2 \pm \sqrt{4 - 8}}{2}\">\r<BR>\n" );
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document.write( "which is not equal to 3/2, or any other real number. </SPAN>\n" );
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