Ok, so
We want to find an odd degree polynomial but is NOT an odd function.
This polynomial could be:
This is an odd degree polynomial because the highest degree is 3 which is an odd number.
Now, we're going to check that this isn't an odd function.
An odd function is supposed to satisfy that:
So, we're going to check this with our example:
Now, let's make - f(x):
As you can see, these expressions aren't the same.
Therefore, the function is not odd.