Answer:
3x³ - 7x² - 2x + 8
Step-by-step explanation:
(x + 1)(3x² - 10x + 8)
Each term in the second factor is multiplied by each term in the first factor, that is
x(3x² - 10x + 8) + 1 (3x² - 10x + 8) ← distribute parenthesis
= 3x³ - 10x² + 8x + 3x² - 10x + 8 ← collect like terms
= 3x³ - 7x² - 2x + 8
