16.

(4x + 3)(2x2 - 7x +6)

In this case, we also need to mulltiply each term in the first polynomial by each term in the second polynomial.

1       2       3       4       5       6

8x3 - 28x2 + 24x + 6x2 - 21x + 18

Combine like terms

8x3 - 22x2 + 3x +18

The vertical format for these problems looks like

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