Respuesta :

average value = (value of fx) at x = 2 minus value of f(x) at  x = - 2) /  (2 -(-2))(
= [[2^3 - 2(2) + 5] - [ -2^3 - 2(-2) + 5] ] /  4

= ( 9 -  1) / 4  =  2