Answer:
x³ + x² - 14x - 24
Explanation:
(x + 3) (x² - 2x - 8) =
= x(x² - 2x - 8) + 3(x² - 2x - 8)
= x³ - 2x² - 8x + 3x² - 6x - 24
= x³ + x² - 14x - 24
x3+x2-14x-24
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