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1/5 . 2^6x-2 + 1/20 . 2^3x = 1
1/20 . 2^6x + 1/20 . 2^3x = 1
Misal 2^3x = nadia
1/20 . Nadia^2 + 1/20 nadia -1 = 0
Kali 20 biar kliatan enak
Nadia^2 + nadia -20 = 0
(Nadia+5)(nadia-4)
Nadia = -5 atau nadia = 4
2^3x = -5 Tidak mungkin
2^3x = 4
2^3x = 2^2
3x = 2
Jadi x = ..,, (isi sndiri)