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In actual fact, the prime factorization of 42 is not 21 x 2, as 21 is not a Prime number. The complete prime factorization of 42 is 2 x 3 x 7.

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Q: Can you explain why the prime factorization of 42 is 21 2?

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21 and 6 are two composite numbers that have 42 as a common multiple. One of the prime factors of 42, which is 3, is a prime factor of 21 and 6 as well. The prime factorization of 42 (2 x 3 x 7) includes the prime factorization of 21 (3 x 7) and 6 (2 x 3).

No.

Negative numbers don't have prime factorizations.

It is: 126

42=2^3*7

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No, 21 is not prime.

No. Prime factorization is the method of expressing a number as the product of prime numbers. So, Prime factorization of 42 = 2x3x7

No, 21 is not a prime number.

Prime Factorization of 42No, 21 X 2 is not the prime factorization of 42 because 21 is a composite number.2 X 3 X 7 is the prime factorization of 42 because all the factors are prime numbers.To arrive at the prime factorization in this particular case, you had to factor 21 down to its prime factors, not forgetting that one of the prime factors of 42 was already 2.2 X 21 = 423 X 7 = 21, so the prime factorization of 42 is:2 X 3 X 7No, 21 is not prime. Try 2 x 3 x 7.

21 isn't prime. The prime factorization of 42 is 2 x 3 x 7.

No, prime factorization of 42 is not 21 x 2 because 21 is not a prime number and it can be further broken into primes as 3 x 7. So prime factorization of 42 is 2 x 3 x 7.

It is: 21*31*71 = 42

No, 21 isn't prime. 2 x 3 x 7 = 42

It's incomplete. 21 isn't prime. 42 21,2 7,3,2 2 x 3 x 7 = 42

21 isn't prime, 2 x 3 x 7 = 42

you are almost there, you must split it one more time. 21 is divisible by 7 and 3, so the prime factorization of 42 is 7x3x2

No because 21 = 3 * 7 it is: 42 = 2 * 3 * 7

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