Question

What is the complete factorization of the polynomial below?
X^3+3x^2-x-3
A)(x-1)(x-1)(x-3)
B)(x+1)(x-1)(x+3)
C)(x+1)(x-1)(x-3)
D)(x-1)(x-1)(x+3)

Answer 1

Have you tried to factor by grouping?

Answer 2

as above you can factor by grouping and applying the difference of 2 squares
x^2 - 1 = (x +1)(x -1)