document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=147280>Question 147280</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me solve this equation <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=please+help+me+solve+this+equation+ ALIGN=MIDDLE  ALT=\"please+help+me+solve+this+equation+\"   DISABLED_style= \"max-width:90%; height:auto;\" > if 4^n=20, then what is the value of 4^-n  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #107652 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=107652\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In this problem, you don't necessarily need to solve for n. You just need to transform <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%5En ALIGN=MIDDLE  ALT=\"4%5En\"   DISABLED_style= \"max-width:90%; height:auto;\" > into <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%5E%28-n%29 ALIGN=MIDDLE  ALT=\"4%5E%28-n%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%5En=20 ALIGN=MIDDLE  ALT=\"4%5En=20\"   DISABLED_style= \"max-width:90%; height:auto;\" > Start with the given equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%284%5En%29%5E%28-1%29=%2820%29%5E%28-1%29 ALIGN=MIDDLE  ALT=\"%284%5En%29%5E%28-1%29=%2820%29%5E%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Raise both sides to the negative first power.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%5E%28-n%29=%2820%29%5E%28-1%29 ALIGN=MIDDLE  ALT=\"4%5E%28-n%29=%2820%29%5E%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Multiply the exponents on the left side.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%5E%28-n%29=1%2F%2820%5E1%29 ALIGN=MIDDLE  ALT=\"4%5E%28-n%29=1%2F%2820%5E1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Rewrite <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%2820%29%5E%28-1%29 ALIGN=MIDDLE  ALT=\"%2820%29%5E%28-1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > as <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F%2820%5E1%29 ALIGN=MIDDLE  ALT=\"1%2F%2820%5E1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4%5E%28-n%29=1%2F%2820%29 ALIGN=MIDDLE  ALT=\"4%5E%28-n%29=1%2F%2820%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify.\r<BR>\n" );
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