document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=167450>Question 167450</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A student is asked to solve the equation <BR>\n" );
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document.write( "x^2 +x - 6 = 5\r<BR>\n" );
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document.write( "The student gives the following steps:<BR>\n" );
document.write( "(x - 2)(x + 3) = 5<BR>\n" );
document.write( "(x - 2) = 5   (x + 3) = 5<BR>\n" );
document.write( "x = 7          x = 2\r<BR>\n" );
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document.write( "Explain whether or not this is correct, and make any necessary corrections.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #123349 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=123349\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The approach is WRONG.<BR>\n" );
document.write( "Proof:<BR>\n" );
document.write( "7^2+7-6=5<BR>\n" );
document.write( "49+7-6=5<BR>\n" );
document.write( "50=5 is an invalid proof.<BR>\n" );
document.write( "2^2+2-6=5<BR>\n" );
document.write( "4+2-6=5<BR>\n" );
document.write( "0=5 is another invalid proof.<BR>\n" );
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document.write( "The proper solution follows:<BR>\n" );
document.write( "x^2+x-6=5<BR>\n" );
document.write( "x^2+x-6-5=0<BR>\n" );
document.write( "x^2+x-11=0<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=%28-b%2B-sqrt%28b%5E2-4%2Aa%2Ac%29%29%2F%282%2Aa%29 ALIGN=MIDDLE  ALT=\"x=%28-b%2B-sqrt%28b%5E2-4%2Aa%2Ac%29%29%2F%282%2Aa%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "x=(-1+-sqrt[1^2-4*1*-11)/2*1<BR>\n" );
document.write( "x=(-1+-sqrt[1+44])/2<BR>\n" );
document.write( "x=(-1+-sqrt45)/2<BR>\n" );
document.write( "x=(-1+-6.7082)/2<BR>\n" );
document.write( "x=(-1+6.7082)/2<BR>\n" );
document.write( "x=5.7082/2<BR>\n" );
document.write( "x=2.8541 answer.<BR>\n" );
document.write( "x=(-1-6.7082)/2<BR>\n" );
document.write( "x=-7.7082/2<BR>\n" );
document.write( "x=-3.8541 answer. </SPAN>\n" );
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