Answer:
x^3-2x^2-21x+12
Explanation:
use foil method
x³ - 2x² - 21x + 12
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
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