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Verified answer
Jawab(x²+1)(x - 4) + 2a = x³ - 3x² +6x + 14
x³ - 4x² + x - 4 + 2a = x³ - 3x² + 6x + 14
2a = x³ - x³ + 4x² - 3x² - x +6x + 4 +14
2a = x² + 5x + 18
x = 1/2 (x² + 5x + 18)