²log²x-²logx²-²log8=0
Matematika
rangga214
Pertanyaan
²log²x-²logx²-²log8=0
1 Jawaban
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1. Jawaban newwiguna
²log²x - ²logx² - ²log8 = 0
²log²x - 2. ²logx - 3 = 0
misal
²logx = a
a² - 2a - 3 = 0
(a - 1)(a + 3) = 0
a - 1 = 0
a = 1
a + 3 = 0
a = -3 (tidak memenuhi)
a = 1
²log x = 1
²log x = ²log2
x = 2