What is the product of (3a + 2)(4a2 – 2a + 9)?

Distribute each term: 3a(4a² − 2a + 9) + 2(4a² − 2a + 9) = 12a³ − 6a² + 27a + 8a² − 4a + 18. Combine like terms to get 12a³ + 2a² + 23a + 18, which is choice D.

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