Question

² log² (4x-4) - ² log (4x-4)⁴ = -3

mohon bantuannya. pakai cara ya...

Answer 1

Verified answer

LogAritMa

Hy Marta..
Ok cara diberikan.. :)

Misal :
²log (4x - 4) = a

²log² (4x - 4) - ²log (4x - 4)⁴ = -3
a² - 4a + 3 = 0
(a - 1)(a - 3) = 0

a = 1
²log (4x - 4) = 1
4x - 4 = 2
4x = 4 + 2
x = 6/4
x = 3/2 ✔

a = 3
²log (4x - 4) = 3
4x - 4 = 2³
x = 3 ✔

NiLai x yg memenuhi :
x = 3/2 dan x = 3