Which statement best describes how to determine whether f(x) = x2 – X + 8 is an even function? Determine whether -x2 - (-x) + 8 is equivalent to x? - x + 8.
Determine whether (-x)2 – (-x) + 8 is equivalent to x2 – X + 8.
Determine whether –x2 – (-x) + 8 is equivalent to -(x2 – X + 8).
Determine whether (-x)2 – (-x) + 8 is equivalent to –(x2 – X + 8).