How do you find the prime factorization of 20?
1 Answer
Apr 8, 2016
Explanation:
You can separate out each prime factor in turn as follows:
#20# is divisible by#2# (i.e. even) since its last digit is even.
So divide by
#10# is divisible by#2# since its last digit is even.
So divide by
#color(blue)(5)# is prime.
So we can stop and write down
#20 = 2 xx 2 xx 5#
This can be written as a factor tree: