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Ответ
log(2^2) x - 9*log(8) x = 4
ОДЗ: x>0
log(2^2) x - 9*log(2^3) x = 4
1/2 * log(2) x - 9/3 * log(2) x = 4
1/2 * log(2) x - 3 * log(2) x = 4
log(2) x * (1/2 - 3) = 4
(-5/2) * log(2) x = 4
log(2) x = - 8/5
x = 2^(-8/5) = 1/2^(8/5)
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