Question

What are the binomial factors of the polynomial x^3-2x^2+4x-8

a. (x-2),(x+2),(x+1)
b. (x+2),(x-2),(x+2)
c. (x-2)
d. (x-2),(x-2),(x+2)

Answer 1

x^3-2x^2+4x-4 factored out. We can see, all the roots multiplied equals -8, so the answer choice is either b or d. For b the roots multiplied is -2*2*2 = -8, which is what we want so the answer is b.

Answer 2

D. (x-2), (x-2), (x+2)

Explanation:

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