Answer
See below
Work Step by Step
We are asked to find a polynomial function with zeros at $(-4,4,1)$ and a leading coefficient of one.
$$(x-x_1)(x-x_2)(x-x_3)\\=(x+4)(x-4)(x-1)\\=(x^2-16)(x-1)\\=x^3-x^2-16x+16$$
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