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2pgkt 6x - 2pangkat 3x + 1 + 2pangkat 4 =0
6x - 3x + 1 + 4 = 0
3x = 0 - 1 - 4
x = -5/3
makasiiih
64^x - 8^(x+1) + 16 = 0
8^2x - 8.8^x + 16 = 0
misal 8^x = a
a^2 - 8a +16 = 0
(a - 4)(a - 4)=0
a=4
8^x = 4
2^(3x) = 2^2
3x = 2
x = 2/3
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