ОДЗ: x ∈ R
Замена x^2-x+4=t
9log3(t)=2t
t^9=9^t
t = 9
x^2-x-5=0
x = (1 ±√21)/2
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ОДЗ: x ∈ R
Замена x^2-x+4=t
9log3(t)=2t
t^9=9^t
t = 9
x^2-x-5=0
x = (1 ±√21)/2