tolong jawab secepatnya, thx

Mapel : Matematika
Kelas : X SMA
Bab : Eksponen dan logaritma

Pembahasan :
16.

x'log 2 + x'log (3x - 4) = 2
x'log 2(3x - 4) = 2 . x'log x
x'log 6x - 8 = x'log x²
6x - 8 = x²
x² - 6x + 8 = 0
(x - 4)(x - 2) = 0
x = 2
x = 4

Maka...
X1 + X2 = 4 + 2 = 6

Jawaban : D

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17.


(Log x)(2Log x - 3) = Log 100
2Log²x - 3Logx = 2
2Log²x - 3Logx - 2 = 0

Berdasarkan Teorema Vietta
X1 . X2 = c/a
X1 . X2 = -2/2
X1 . X2 = -1