Answer:
x = 3, x = 4
Step-by-step explanation:
Given
x³ - 2x² - 11x + 12 = x³ - 13x - 12
Subtract x³ - 13x - 12 from both sides
- 2x² + 2x + 24 = 0 ← in standard form ( divide all terms by - 2 )
x² - x - 12 = 0
(x - 4)(x - 3) = 0 ← in factored form
Equate each factor to zero and solve for x
x - 4 = 0 ⇒ x = 4
x - 3 = 0 ⇒ x = 3
