Question 3 • (AG Q2) Keystone Algebra 1 Block: 26-27(DDiamond)
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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