Answer:
(x - 4)(x + 1)
Step-by-step explanation:
Given
x² - 3x - 4
To factor the trinomial
Consider the factors of the constant term (- 4) which sum to give the coefficient of the x- term (- 3)
The factors are - 4 and + 1, since
- 4 × 1 = - 4 and - 4 + 1 = - 3, hence
x² - 3x - 4 = (x - 4)(x + 1)
