algebra

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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

  • algebra -

    f(-2)=-8+36-48+16=not zero
    f(-1)=-1+9-24+16= zero, it is a zero.

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