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19 July, 16:00

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

12a3 - 2a + 18

12a3 + 6a + 9

12a3 - 6a2 + 23a + 18

12a3 + 2a2 + 23a + 18

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  1. 19 July, 17:51
    0
    (3a + 2) (4a2 - 2a + 9)

    =12a^3 - 6a^2 + 27a + 8a^2 - 4a + 18

    = 12 a^3 + 2a^2 + 23a + 18

    answer is 12a^3 + 2a^2 + 23a + 18 (last choice)
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