f(-2)=-8+36-48+16=not zero
f(-1)=-1+9-24+16= zero, it is a zero.
which of the following is true about the polynomial f(x) = x3 + 9x2 + 24x + 16 ?
a. -1 is a zero
b. 1 is a zero
c. -2 is a zero
d. 2i is a zero
1 answer