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2(x²) + 2(- 3x) + 2(- 5) dari (x² + x + 2)
(2x² - 6x - 10) dari (x² + x + 2)
(x² + x + 2) - (2x² - 6x - 10)
x² + x + 2 - 2x² + 6x + 10
(x² - 2x²) + (x + 6x) + (2 + 10)
- x² + 7x + 12