Question

Factor completely 3x^2 − x − 4.

(3x − 1)(x + 4)
(3x + 4)(x − 1)
(3x − 2)(x + 2)
(3x − 4)(x + 1)
Help me evaluate the answer!

Answer 1

Slip and slide method
x^2-x-12
(x-4)(x+3)
(x-4/3)(x+3/3)
(3x-4)(x+1)

Final answer: D
ps. You can foil to check :)