Объяснение:
15а³-(14a+3a³-(a³-6a)) = 15а³ - 14a - 3a³ + (a³-6a) = 12a³ - 14a + a³ - 6a = 13a³ + 8a
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Объяснение:
15а³-(14a+3a³-(a³-6a)) = 15а³ - 14a - 3a³ + (a³-6a) = 12a³ - 14a + a³ - 6a = 13a³ + 8a