Answer:
Maximum number of turns: 3
Step-by-step explanation:
1. By definition, a polynomial of [tex]n[/tex] degree, has a maximum turning points of [tex]n-1[/tex].
2. Therefore, if you have the polynomial given in the problem, which is a polynomial of degree 4 ([tex]n=4[/tex], the maximum number of turns can be obtained as following:
[tex]n-1=4-1=3[/tex]
3. Therefore, you can conclude that the maximum number of turns are 3.
