Ответ:1) 14x³ + 11x² + 9
2) -x³ + 6x² + 10
3) a³ + 3a² - 5a² + 7 - 8 + 4a³
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Ответ:1) 14x³ + 11x² + 9
2) -x³ + 6x² + 10
3) a³ + 3a² - 5a² + 7 - 8 + 4a³