Polynomial Function D9De7A
1. **Problem Statement:** We need to find a polynomial function that matches the given graph.
2. **Observations:** The graph has roots approximately at $x = -6$, $x = 0$, and $x = 4$. The graph opens downward at both ends, indicating a negative leading coefficient and an even degree polynomial (likely degree 4).
3. **General Form:** A polynomial with roots at $x = -6$, $x = 0$, and $x = 4$ can be written as:
$$y = a(x + 6)^m x^n (x - 4)^p$$
where $m, n, p$ are the multiplicities of the roots and $a$ is the leading coefficient.
4. **Degree and Multiplicities:** Since the graph looks like a 4th degree polynomial and the root at $x=4$ appears to have multiplicity 2 (the graph touches the x-axis and turns), we can set $m=1$, $n=1$, and $p=2$.
5. **Leading Coefficient:** The graph opens downward, so $a < 0$. We can choose $a = -1$ for simplicity.
6. **Final Function:**
$$y = - (x + 6) x (x - 4)^2$$
This function has roots at $-6$, $0$, and $4$ (with multiplicity 2), degree 4, and opens downward, matching the graph.
7. **Verification:** Expanding the function:
$$y = - (x + 6) x (x^2 - 8x + 16) = - x (x + 6)(x^2 - 8x + 16)$$
First expand $(x + 6)(x^2 - 8x + 16)$:
$$x^3 - 8x^2 + 16x + 6x^2 - 48x + 96 = x^3 - 2x^2 - 32x + 96$$
Then multiply by $x$:
$$x^4 - 2x^3 - 32x^2 + 96x$$
Apply the negative sign:
$$y = -x^4 + 2x^3 + 32x^2 - 96x$$
This polynomial matches the described behavior.
**Answer:**
$$y = - (x + 6) x (x - 4)^2$$