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2x per x²-4x-4 ≥ 4 per x
4(x²-4x-4) ≥ 2x²
4x²-16x-16 ≥ 2x²
4x²-2x²-16x-16 ≥ 0
2x²-16x-16 ≥ 0
semoga membantu..
2x² ≥ 4(x² - 4x + 4)
2x² ≥ 4x² - 16x + 16
2x² - 4x² + 16x - 16 ≥ 0
- 2x² + 16x - 16 ≥ 0
x² - 8x + 16 ≤ 0
(x - 4)² ≤ 0
x - 4 ≤ 0
x ≤ 4