12 = 2 x 2 x 3
38 = 2 x 19
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The prime factors of 38 are 19 and 2. Since 1 isn't prime or composite, 1 cannot be a prime factor of 38.
2 x 19 = 38
The prime factorization of 12 is: 2 X 2 X 3 The prime factorization of 18 is: 2 X 3 X 3 The prime factorization of 20 is: 2 X 2 X 5
The prime factorization for 12 is 2 x 2 x 3The prime factorization for 20 is 2 x 2 x 5GCF of (12,20) = 4
2 x 7 = 14 2 x 19 = 38