Question

Please need help on this still lost on both of them

Answer 1

4x^3 + x^2 - 12x - 3

Explanation:

(4x+1)(x^2 - 3)

use FOIL

(4x)(x^2) + (4x)(-3) + (1)(x^2) + (1)(-3)

4x^3+(-12x) + x^2 + (-3)

4x^3 + x^2 - 12x - 3