2log^2 x-2 *2logx-3=0

Kelas 10 Matematika
Bab Logaritma

^ = pangkat

²log x = a

a² - 2a - 3 = 0
(a - 3) (a + 1) = 0
a - 3 = 0
a = 3

a + 1 = 0
a = -1

²log x = a
²log x = 3
x = 2^3
x = 8

²log x = -1
x = 2^(-1)
x = 1/2

Jadi, x = 1/2 atau x = 8