Find the average rate of change h(x)=2x^2-4 from x=2 to x=6

Question

Simplify your answer as much as possible

Answer 1

average=(finalvalue-initial value)/chngeinX

final value= h'(6)=4*6=24
initial vealue=h'(2)=4*2=8

average h'=16/4=4 units unknown