document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1207661>Question 1207661</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the real solutions of the equation. \r<BR>\n" );
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document.write( "2x^(-2) - 3x^(-1) - 4 = 0\r<BR>\n" );
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document.write( "I then decided to rewrite the original equation this way:\r<BR>\n" );
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document.write( "(2/x^2) - (3/x) - 4 = 0\r<BR>\n" );
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document.write( "Stuck here.... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #845657 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=845657\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> i did the following:\r<BR>\n" );
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document.write( "let k = x^-1\r<BR>\n" );
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document.write( "x^-2 = x^-1 * x^-1 = k * k = k^2\r<BR>\n" );
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document.write( "2x^(-2) - 3x^(-1) - 4 = 0 becomes:\r<BR>\n" );
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document.write( "2k^2 - 3k - 4 = 0\r<BR>\n" );
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document.write( "factor by using quadratic formula to get:\r<BR>\n" );
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document.write( "k = -.8507810594 or 2.350781059.\r<BR>\n" );
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document.write( "since k = x^-1, then:\r<BR>\n" );
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document.write( "x^-1 = -.8507810594 or 2.350781059.\r<BR>\n" );
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document.write( "this means that 1/k = -.8507810594 or 2.350781059.\r<BR>\n" );
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document.write( "solve for k to get:\r<BR>\n" );
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document.write( "k = 1/.8507810594 or 1/2.350781059.\r<BR>\n" );
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document.write( "k becomes 1.17539053 or .4253905297.\r<BR>\n" );
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document.write( "round as necessary.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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