LN(x^2)^2 - LN(x^3) - 1 = 0
(2·LN(x))^2 - 3·LN(x) - 1 = 0
LN(x) = t
(2·t)^2 - 3·t - 1 = 0
4·t^2 - 3·t - 1 = 0
(t - 1)·(4·t + 1) = 0
t = - 1/4 ∨ t = 1
LN(x) = - 1/4--->x = e^(- 1/4)
LN(x) = 1--->x = e
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