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Q: Is 21x 2 the only prime factorization of 42?

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No because as a product of its prime factors: 2*3*7 = 42

No because its prime factorization is: 2*3*7 = 42

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

No.

No, 21 is not prime.

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.

You find the prime factorization of 42 like this. You think what 2 number multiplied together give you 42: 6x7 7 is prime because the only factors it has is 1 and itself. 6 can be broken into 3x2. So you currently have 7x3x2. All these numbers are prime so you just found the prime factorization!

42=2x21 21=3x7 PF=2x3x7 The PF (Prime Factorization) of 42 is 2x3x7.(Sorry, I couldn't do a factor tree, there are always helpful to use when doing prime factorization, but since this is the computer, I could only do it like the following above.)

It is: 2*3*7 = 42

42 = 2*3*7

It is: 2*3*7 = 42

The prime factorization of 42 does not use exponents: 2 x 3 x 7

No.

42

-42 = -1*2*3*7

42 = 2 × 3 × 7

The GCF of 42 and 81 is 3.The prime factorization of 42 is 2*3*7The prime factorization of 81 is 3*3*3*3Their only and greatest common factor is 3.

Negative numbers don't have prime factorizations.

Negative numbers don't have prime factorizations.

The prime factorization of 14 = 2 x 7, and the prime factorization of 42 = 2 x 3 x 7

the LCM of 42 and 126 using a prime factorization is 2 times 2 times 3

2, 3 and 7

2, 3 and 7

The prime factorisation of 42 is 2*3*7.

They are: 37+5 = 42