Take 30/42, for example. The prime factorization of the numerator (30) is 2 x 3 x 5. The prime factorization of the denominator (42) is 2 x 3 x 7. This will help you find the GCF or the LCM.
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.
The tree finds the prime factorization. The prime factorization finds the GCF. Example: 30 and 42. 30 15,2 5,3,2 42 21,2 7,3,2 2 x 3 x 5 = 30 2 x 3 x 7 = 42 Select the common factors. 2 x 3 = 6, the GCF
Method of prime factorization: Expressing each number as the product of prime numbers.P.F. of 16 = 2x2x2x2P.F. of 42 = 2x3x7G.C.F.(16, 42) = 2
No. Prime factorization is the method of expressing a number as the product of prime numbers. So, Prime factorization of 42 = 2x3x7
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.
The GCF is 2.
No, 21 is not prime.
No.
21 isn't prime. The prime factorization of 42 is 2 x 3 x 7.
Prime factorization is one of the ways you find the HCF.
It is: 2*3*7 = 42