Question

Determine whether the function ƒ(x) = x4(x2 − 1) is even, odd or neither.

Answer 1

f(x) = x4(x2 - 1)
f(-x) = (-x)4((-x)2 - 1)
f(-x) = x4(x2 - 1)
from above explanation it is clear that the function is even.