^2 log x + 12/ ^2 log x = 7 dipenuhi oleh

LogaRitMa

Hy Evhy... :)

²log x + 12/²log x = 7

Misal : ²log x = a

a + 12/a = 7
Kalikan dg a
a² + 12 = 7a
a² - 7a + 12 = 0
(a - 3)(a - 4) = 0
a = 3 atau a = 4

a = 3
²log x = 3
x = 2³ = 8

a = 4
²log x = 4
x = 2⁴ = 16

Nilai x yg memenuhi :
8 dan 16