Answer:
Maximum number of turns: 3
Explanation:
1. By definition, a polynomial of
degree, has a maximum turning points of:
.
2. Therefore, if you have the polynomial given in the problem, which is a polynomial of degree 4 (
), the maximum number of turns can be obtained as following:
![n-1=4-1=3](https://img.qammunity.org/2020/formulas/mathematics/middle-school/56qod1sloghw3fy90a5fv0sn0mjtafofj6.png)
3. Therefore, you can conclude that the maximum number of turns are 3.