The answer is:
⇨ 2 × 2 × 3 × 3
Work/explanation:
The factors of 36 are:
4 × 9
But, these are not prime factors so we break them down even more :
2 × 2 × 3 × 3
This is how we write 36 as a product of its prime factors.
We could also use 6 × 6, then:
2 × 3
2 × 3
2 × 3 × 2 × 3
Rearrange from smallest to largest:
2 × 2 × 3 × 3
Once again we get the same answer.
Hence, that's the right answer.