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¹⁻²ˣlog 9.⁹log x² = ¹⁻²ˣlog 9
¹⁻²ˣlog x² = ¹⁻²ˣlog 9
x² = 9
x = +3 atau -3
9. ˣlog 2 + ˣlog (3x-4) = 2
ˣlog 2.(3x-4) = ˣlog x²
6x-8 = x²
0 = x²-6x+8
0 = (x-4)(x-2)
x= 2 atau x= 4
x₁-x₂ = 4-2
= 2