Hello there I hope you are having a great day :)
Your question, Complete the factorization to express these numbers as product of ONLY prime numbers:
45 = 5 and 9 and 3 and 3
24 = 3 and 8 and 2 and 4 and 2 and 2
36 = 2 and 18 and 3 and 6 and 3 and 2
40 = 5 and 8 and 4 and 2 and 2 and 2 and 2
Hopefully that helps you :)