document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=20898>Question 20898</A>: <I><SPAN STYLE=\"word-break: break-all;\"> combine and simplify\r<BR>\n" );
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document.write( "a^2/x-1 - a^2/x+1\r<BR>\n" );
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document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #12106 by </B><A HREF=/tutors/aboutme.mpl?userid=philberg99><B>philberg99(10)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=philberg99><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=12106\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> NO! NO! NO!\r<BR>\n" );
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document.write( "You need a common denominator.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a%5E2%29%2F%28x-1%29 ALIGN=MIDDLE  ALT=\"%28a%5E2%29%2F%28x-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a%5E2%29%2F%28x%2B1%29 ALIGN=MIDDLE  ALT=\"%28a%5E2%29%2F%28x%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28a%5E2%29%2A%28x%2B1%29%29%2F%28%28x-1%29%2A%28x%2B1%29%29+ ALIGN=MIDDLE  ALT=\"%28%28a%5E2%29%2A%28x%2B1%29%29%2F%28%28x-1%29%2A%28x%2B1%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28%28a%5E2%29%2A%28x-1%29%29%2F%28%28x%2B1%29%2A%28x-1%29%29 ALIGN=MIDDLE  ALT=\"+%28%28a%5E2%29%2A%28x-1%29%29%2F%28%28x%2B1%29%2A%28x-1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28a%5E2%2Ax%2Ba%5E2%29%2F%28x%5E2-1%29+ ALIGN=MIDDLE  ALT=\"%28a%5E2%2Ax%2Ba%5E2%29%2F%28x%5E2-1%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28a%5E2%2Ax-a%5E2%29%2F%28x%5E2-1%29 ALIGN=MIDDLE  ALT=\"+%28a%5E2%2Ax-a%5E2%29%2F%28x%5E2-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Now we can subtract the numerators because the denominators are the same.  This gives us \r<BR>\n" );
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