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Q: what is the complete factorization of the polynomial below x^3+4x^2-x-4?

A. (x+1)(x-1)(x+4)
B. (x-1)(x-1)(x-4)
C. (x+1)(x-1)(x-4)
D. (x-1)(x-1)(x+4)

Respuesta :

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

answer
A. (x+1)(x-1)(x+4)

A is the correct choice to the question

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