ANSWER
![f(x) =x^3-6x^2-13x+42](https://img.qammunity.org/2020/formulas/mathematics/high-school/mf7v3bem1so1078hnm0o8enk60gz7h6j41.png)
Step-by-step explanation
The zeros of the cubic function is given as:
x=7,x=-3,x=2
This implies that, x-7,x+3,x-2 are factors of the given cubic polynomial function.
We can write the completely factored form as a function of x to get:
![f(x) = (x - 7)(x + 3)(x - 2)](https://img.qammunity.org/2020/formulas/mathematics/high-school/vph6eel6p6vel37ittxq3o07jysvhs8gwv.png)
We expand to get:
![f(x) = (x - 7)(x^2+ x-6)](https://img.qammunity.org/2020/formulas/mathematics/high-school/hppd3agytm4iiyotxzh3w3wv53m5ats1sa.png)
![f(x) =x^3-6x^2-13x+42](https://img.qammunity.org/2020/formulas/mathematics/high-school/mf7v3bem1so1078hnm0o8enk60gz7h6j41.png)
This is a cubic function because the highest degree is 3.