Question

Which binomial is a factor of f(x) = x^4 – 33x^2 – 28x + 60?



(x – 2)


(x + 1)

(x – 5)


(x – 6)

Answer 1

You can substitute.
For example the first one
x - 2 = 0
x = 2
So find f(2). If you get 0, then (x - 2) = 0

Answer 2

well x -2 would be a factor is what I meant