10. log410 + log, 0,1 log49

10. (log₄10 + log₄0,1) / log₄9

log₄10 + log₄0,1 = log₄(10 ⋅ 0,1) = log₄1 = 0

Тогда: (log₄10 + log₄0,1) / log₄9 = 0 / log₄9 = 0

Ответ: 0