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2x - x = 2
x = 2
semoga membantu :)
misal kan ²log x = a dan x= 2ᵃ
a² -a -2 =0
(a-2)(a+1) =0
a= 2 atau a = -1
a= 2 --> x = 2² = 4
a = -1 -> x= 2⁻¹ = 1/2