document.write( "Question 591847: I need help in solving this equation: 2log x - log4 = 1/2 log81 \n" ); document.write( "
Algebra.Com's Answer #375755 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
x^2 / 4 = sqrt(81)\r
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\n" ); document.write( "\n" ); document.write( "remember, logarithms are not defined for negative arguments
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