11. logo.s5 logs 1,25

log_0.55 * log₅1.25 = log_0.55 * log₅\(\frac{5}{4}\) = log_0.55 * (log₅5 - log₅4) = log_0.55 * (1 - log₅2²) = log_0.55 * (1 - 2log₅2) = log_0.55 * (1 - \(\frac{2}{log_{2}5}\))

Не могу привести к численному значению

Ответ: log_0.55 * (1 - \(\frac{2}{log_{2}5}\))