document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=410879>Question 410879</A>: <I><SPAN STYLE=\"word-break: break-all;\"> When rewriting an exponential expression with a negative exponent and a positive base to an expression containing only a positive exponent, does the sign of the base change? And why not<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 #288850 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=288850\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The sign of the base does not change. If we have an exponent <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%5E%28-b%29 ALIGN=MIDDLE  ALT=\"a%5E%28-b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > this can be written as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%28a%5Eb%29 ALIGN=MIDDLE  ALT=\"1%2F%28a%5Eb%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > because <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%28a%5Eb%29+=+%28a%5E0%29%2F%28a%5Eb%29+=+a%5E%280-b%29+=+a%5E%28-b%29 ALIGN=MIDDLE  ALT=\"1%2F%28a%5Eb%29+=+%28a%5E0%29%2F%28a%5Eb%29+=+a%5E%280-b%29+=+a%5E%28-b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >. </SPAN>\n" );
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