Question

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).
fl-8)=0
f(8) = 0

Answer 1

`x = -8` is a root.

`f(-8) = 0` is correct.

Explanation:

As

`(x + 8)` is a factor of
`f(x)`

then it must be

`x = -8` is a root.

Therefore,

`f(-8) = 0` is correct.