Answer:
x³ + 3x² - 16x + 12
Explanation:
Each term in the second factor is multiplied by each term in the first factor, that is
x²(x - 2) + 5x(x - 2) - 6(x - 2) ← distribute the 3 parenthesis
= x³ - 2x² + 5x² - 10x - 6x + 12 ← collect like terms
= x³ + 3x² - 16x + 12