document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1184035>Question 1184035</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Which of the following could be an exact value of n^4 where n is an integer?<BR>\n" );
document.write( "A. 1.6 x 10^20<BR>\n" );
document.write( "B. 1.6 x 10^21<BR>\n" );
document.write( "C. 1.6 x 10^22<BR>\n" );
document.write( "D. 1.6 x 10^23<BR>\n" );
document.write( "E. 1.6 x 10^24<BR>\n" );
document.write( "The correct answer is suppose to be A but I don't know how.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #814568 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=814568\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the fourth root of 1.6 * 10^20 is equal to:\r<BR>\n" );
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document.write( "(1.6 * 10^20) ^ (1/4) which is equal to:\r<BR>\n" );
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document.write( "(16 * 10^19) ^ (1/4) which is equal to:\r<BR>\n" );
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document.write( "(2 * (10^19)^1/4) which is equal to:\r<BR>\n" );
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document.write( "2 * 10^(19/4) which is not an integer.\r<BR>\n" );
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document.write( "selection 1 doesn't appear to be good.\r<BR>\n" );
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document.write( "i think it's going to be B.\r<BR>\n" );
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document.write( "B is 1.6 * 10^21.\r<BR>\n" );
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document.write( "this is equal to 16 * 10^20\r<BR>\n" );
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document.write( "the fourth root of that is (16 * 10^20) ^ (1/4) which is equal to:\r<BR>\n" );
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document.write( "16^(1/4) * (10^20)^(1/4) which is equal to:\r<BR>\n" );
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document.write( "2 * 10^5.\r<BR>\n" );
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document.write( "that's the value of n.\r<BR>\n" );
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document.write( "raise that to the 4th power to get:\r<BR>\n" );
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document.write( "(2 * 10^5) ^ 4 which gets you:\r<BR>\n" );
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document.write( "2^4 * (10^5)^4 which gets you:\r<BR>\n" );
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document.write( "16 * 10^20 which is the same as:\r<BR>\n" );
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document.write( "1.6 * 10^21.\r<BR>\n" );
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document.write( "i'd go with selection B.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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