Edited by hoangtrong2305, 13-10-2012 - 23:08.
$4^{x^2-x}+4^{1-x^2}=16\left ( \frac{1}{4^{x+3}}+1 \right )$
Started By HSchamtien, 04-10-2012 - 14:26
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Edited by hoangtrong2305, 13-10-2012 - 23:08.
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