Answer:
5, 3, 3
OR
5 × 3²
Explanation:
The prime factorization of a number is the process of breaking it into a product of its prime factors.
We can recognize that 5 is a prime factor of 45, since 45 ends in a 5.
known factor → 5
When we divide 45 by 5 to factorize what is left, we get 9, whose prime factorization is simply two 3's (3 × 3 = 9).
So, here is 45's prime factorization:
factors → 5, 3, 3
NOTE: We can also write the prime factorization as multiplication, rather than with commas:
5 × 3²