Answer:
2x³ + x² - 14x - 7
Explanation:
The product of f(x) and g(x) is
(2x + 1)(x² - 7)
Each term in the second factor is multiplied by each term in the first factor
2x(x² - 7) + 1 (x² - 7) ← distribute both parenthesis
= 2x³ - 14x + x² - 7
= 2x³ + x² - 14x - 7 ← in standard form