Question

Решить неравенство (1/27)^-2x < 9^3

Answer 1

$(\frac{1}{27})^{-2x}<9^{3}\\\\(3^{-3})^{-2x}<(3^{2})^{3}\\\\3^{6x}<3^{6}\\\\6x<6\\\\x<1\\\\x\in(-\infty;1)$