2log (x2 - 4x + 4) = 0

xlog 1 = 0, berapapun nilai x.

2log (x2 - 4x + 4) = 2log 1

Jadi,
x2 - 4x + 4 = 1
x2 - 4x + 3 = 0
(x - 3) (x - 1) = 0
x = 3 dan x = 1

LogAritMa

²log (x² - 4x + 4) = 0
x² - 4x + 4 = 1
x² - 4x + 3 = 0
(x - 1)(x - 3) = 0
x = 1 atau x = 3

NiLai x yg memenuhi :
x = 1 atau x = 3