If f(x) = x3 – 9x2 + 20x
algebraically.
12 and f(2) = 0, then find all of the zeros of f(x)

If (x + 8) is a factor of f(x), which of the following must be true? both x = –8 and x = 8 are roots of f(x). neither x = –8 nor x = 8 is a root of f(x). f(–8) = 0 f(8) = 0