Respuesta :
Answer:
x³ - 2x² - 21x + 12
Step-by-step explanation:
Step 1: Write expression
(x + 4)(x² - 6x + 3)
Step 2: Distribute each term
x³ - 6x² + 3x
4x² - 24x + 12
Step 3: Combine
x³ - 6x² + 3x + 4x² - 24x + 12
Step 4: Combine like terms
x³ - 2x² - 21x + 12