If the factors of a polynomial are x + 8 and x + 4, what values of x make that polynomial 0?
a. 8 and -4
b. -8 and 4
c. -8 and -4
d. 8 and 4

Given the factors, the polynomial can be expressed as,
                              (x + 8)(x + 4) = 0
The factors may be individually taken account,
                            x + 8 = 0     ; x = -8
                            x + 4 = 0     ; x = -4
Thus, the values of x are -8 and -4. The answer is letter C.