posted by Kally .
i do not get this
use division to determine whethe the binomial is a factor of f(x)
yes or no
3 is a factor of 12 because 3 divides exactly into 12 leaving no remainder
similarly if x-2 is a factor of x^3+20x-32 then it must divided exactly into it leaving no remainder.
divide x^3+20x-32 by x-2 and see what happens.