What can be deduced about f(x)=x^{4}-10 x^{3}-20 x^{2}-14 x-32 from the following synthetic division result? Select all that apply. -2 is a zero of f (x) 2 is a zero

of f (x) No correct answer is shown -2 is an upper bound for the real zeros of f (x) -2 is a lower bound for the real zeros of f (x) (x + 2) is a factor of f (x) (x – 2) is a factor of f (x)-