document.write( "Question 533186: how do i solve log(x)81=-4 \n" ); document.write( "
Algebra.Com's Answer #351060 by ankor@dixie-net.com(22740)\"\" \"About 
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how do i solve log(x)81=-4
\n" ); document.write( "Write the exponent form of logs
\n" ); document.write( "x^-4 = 81
\n" ); document.write( "get rid of the neg by using the reciprocal of 81
\n" ); document.write( "x^4 = \"1%2F81\"
\n" ); document.write( "x = the 4th root of \"1%2F81\"
\n" ); document.write( "x = \"1%2F3\"
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\n" ); document.write( ":
\n" ); document.write( "Check on calc 3^4 = 81
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