document.write( "Question 950243: solve for x: 4^2x=21 \n" ); document.write( "
Algebra.Com's Answer #580187 by Alan3354(69443)\"\" \"About 
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solve for x: 4^2x=21
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\n" ); document.write( "16x = 21
\n" ); document.write( "x = 21/16
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