2 ²log ²x + 5 ²log x + 2 = 0

jawab

²log x = a → x = 2ᵃ

2 a² + 5a + 2 = 0
(2a + 1)(a + 2) = 0
a= -1/2  atau a = - 2

x = 2ᵃ
a= 1/2 → x = 2^(-1/2) = 1/√2 = 1/2 √2
a = - 2 → x =2⁻² = 1/4