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- 8 < 3x - 4 < 8
- 4 < 3x < 12
- 4/3 < x < 4
9x^2 - 24x + 16 < 64
9x^2 - 24x - 48 < 0
3x^2 - 8x - 12 < 0
lalu difaktorkan :)