Question

log маленькая8(x^2-7x)>log мал.8 8

Answer 1

$log_8(x^2-7x)\ \textgreater \ log_88 \\ x^2-7x\ \textgreater \ 8 \\ x^2-7x-8\ \textgreater \ 0 \\ (x+1)(x-8)\ \textgreater \ 0$

____+___$-1$____-____$8$____+_____

Ответ: $x\in(-\infty;-1) \textup{ U } (8;+\infty)$