Question

Кому не лень, хотя бы один из примеров.

Answer 1

6) 2х +1 = (1/3)^5, ⇒ 2x = 1/243 -1, ⇒ 2х = -242/243, ⇒х = -121/243
    2x +1 >0, ⇒ х > -1/2
7)log₅x + log₅x/log₅25 = 1/125
   log₅x + 1/2*log₅x = 1/125
3/2*log₅x = 1/125
log₅x = 2/375
х = 5^2/375