Answer:
The degree of f(x) is even and the leading
coefficient is positive. There are 5 distinct
real zeros and 3 relative minimum values.
(The only mistake seems to be that f(x) is even)
Explanation:
The degree of f(x) is even since the function goes towards positive infinity
as x tends towards both negative infinity and positive infinity,
now, since f(x) tends towards positive infinity, the leading coefficient is positive.
The rest looks correct