Ответ:
х³ + 2x² - 5x - 10 = 0
(x³ + 2x²) - (5x + 10) = 0
x²(x + 2) - 5(x + 2) = 0
(x + 2)(x² - 5) = 0
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Ответ:
х³ + 2x² - 5x - 10 = 0
(x³ + 2x²) - (5x + 10) = 0
x²(x + 2) - 5(x + 2) = 0
(x + 2)(x² - 5) = 0