x³ + x² - x - 10 =
= x³ - 2x² + 3x² - 6x + 5x - 10
= x²(x - 2) + 3x(x - 2) + 5(x - 2)
= (x - 2)(x² + 3x + 5)
(x - 2)(x² + 3x + 5)/(x - 2)
= x² + 3x + 5
Answer: option D is the answer
Explanation:
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