Answer
odd
Work Step by Step
We know that if a function is odd, then $f(-x)=-f(x).$
We know that if a function is eben, then $f(-x)=f(x).$
Hence we plug in $-x$ to see what happens.
$f(-x)=(-x)^3-4(-x)=-x^3+4x=-f(x).$ Hence the function is odd.