Answer: a³ - 218
Explanation:
(a - 6)(a² + 6a + 36)
= a(a² + 6a + 36) -6(a² + 6a + 36)
= a³ + 6a² + 36a
- 6a² - 36a - 218
= a³ + 0a² + 0a - 218
= a³ - 218
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