Question

Resolva a inequação (1/3)^2x+1<(1/3)^x-1

Answer 1

$(\frac{1}{3})^{2x+1}\ \textless \ (\frac{1}{3})^{x-1}\\\\2x+1\ \textless \ x-1\\\\2x-x\ \textless \ -1-1\\\\x\ \textless \ -2$