document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1093033>Question 1093033</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve for x.<BR>\n" );
document.write( "sqrt{x^2-x-2} = sqrt{x^2+x+7} -1\r<BR>\n" );
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document.write( "I tried it and i got -5 but the calculator and my teacher said that the answer is supposed to be -2. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #707647 by </B><A HREF=/tutors/aboutme.mpl?userid=addingup><B>addingup(3677)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=addingup><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=addingup><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=707647\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sqrt(x^2 - x - 2) = sqrt(x^2 + x + 7) - 1<BR>\n" );
document.write( "x^2 - x - 2 = (sqrt(x^2 + x + 7) - 1)^2<BR>\n" );
document.write( "Let's simplify the equation on the right:<BR>\n" );
document.write( "(sqrt(x^2 + x + 7) - 1)^2 = 8 + x + x^2 - 2 sqrt(x^2 + x + 7):<BR>\n" );
document.write( "x^2 - x - 2 = 8 + x + x^2 - 2 sqrt(x^2 + x + 7)<BR>\n" );
document.write( "2 sqrt(x^2 + x + 7) = 2 x + 10<BR>\n" );
document.write( "4 (x^2 + x + 7) = (2 x + 10)^2<BR>\n" );
document.write( "4 x^2 + 4 x + 28 = (2 x + 10)^2<BR>\n" );
document.write( "4 x^2 + 4 x + 28 = 4 x^2 + 40 x + 100<BR>\n" );
document.write( "-36 x - 72 = 0<BR>\n" );
document.write( "-36 (x + 2) = 0<BR>\n" );
document.write( "x + 2 = 0<BR>\n" );
document.write( "x = -2<BR>\n" );
document.write( ":<BR>\n" );
document.write( "I hope this helps, it was a lot of writing.<BR>\n" );
document.write( "John<BR>\n" );
document.write( " </SPAN>\n" );
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