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None of the choices shown for that one are correct but the polynomial IS factorable. Try guessing at some linear binomial as a divisor and do polynomial division ---------- I should not say that, since you are probably only in Algebra 1 and have not dealt much with root finding and such. Even so, polynomial division is actually easier than long division on base ten numbers.
Anyway, looking at the particular polynomial, I guessed that either x-4 or x+4 could be a possible factor, so I tried polynomial long division. The factor which worked was x-4. The correct factorization that you are looking for is NOT shown in your list of choices.
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