Explanation:
A factor we determine #1, #2, #3, #4, #5 (in lable), first we divide an upper number and known factors. We get :
#1 = 112/4 = 28
#2 = 4/2 = 2
#3 = (#1)/7 = 28/7 = 4
#4 = 2 (It's prime)
#5 = 7 (It's prime)
Consider that, prime number if and only if divided by 1 and number itself. This conclusion that, #4 and #5 we cannot divide other factor.
Subject : Mathematics
Level : ES
Chapter : Factor Tree (GCD)