Question

Пожалуйста$frac{log_x (2 x^{-1} )*log_x 2x^2}{log_2_x x*log_2_x^{-2} x} textless 40$

Answer 1

$(log_x2)^2=t textgreater =0\ (t-1)(t-4) textless 40\0 textless t textless 9\ -3 textless log_x2 textless 3\ x>1$