²log² x + 5 ²log x + 6 =0

jawab

²log² x + 5 ²log x + 6= 0
misal a= ²log x  → x = 2ᵃ

(²log x)² + 5(²log x) + 6 = 0
a² + 5a  + 6 = 0
(a + 3)(a + 2) = 0
a = - 3  atau a = - 2

x = 2ᵃ
a= - 3 → x = 2⁻³ =  1/8
a = - 2 → x= 2⁻²  =  1/4