Answer: x^3 + x^2 - 17x + 12
Step-by-step explanation:
(x+4)(x^2-5x+3)
x^3 - 5x^2 + 3x + 4x^2 - 20x + 12
underlined and bolded can be combined
That leaves you with x^3 + x^2 - 17x + 12
