document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1115185>Question 1115185</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many solutions are there to the equation <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2%2F%28x%2B1%29 ALIGN=MIDDLE  ALT=\"2%2F%28x%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >+<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%2F%28x%5E2-1%29 ALIGN=MIDDLE  ALT=\"4%2F%28x%5E2-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=1\r<BR>\n" );
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document.write( "A) 0\r<BR>\n" );
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document.write( "B) 1\r<BR>\n" );
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document.write( "C) 2\r<BR>\n" );
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document.write( "D) an infinite number\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 #730071 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=730071\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Multiply the whole equation by x^2-1<BR>\n" );
document.write( "2(x-1)+4=x^2-1<BR>\n" );
document.write( "x^2-2x-3=0<BR>\n" );
document.write( "(x+1)(x-3)=0<BR>\n" );
document.write( "x=-1, 3<BR>\n" );
document.write( "But x=-1 leads to a denominator of 0 in both fractions so extraneous.  <BR>\n" );
document.write( "x=3; (2/4)+(4/8)=1<BR>\n" );
document.write( "1 solution<BR>\n" );
document.write( "B </SPAN>\n" );
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