Ответ:
a³ - 2ab - 2b
Объяснение:
(5a³ - 2ab +6 b) - (4a³ + 8b) =
= 5a³ - 2ab + 6b - 4a³ - 8b =
= (5a³ - 4a³) - 2ab + (6b - 8b) =
= a³ - 2ab - 2b
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Ответ:
a³ - 2ab - 2b
Объяснение:
(5a³ - 2ab +6 b) - (4a³ + 8b) =
= 5a³ - 2ab + 6b - 4a³ - 8b =
= (5a³ - 4a³) - 2ab + (6b - 8b) =
= a³ - 2ab - 2b