Step-by-step explanation:
so we start using repeated division to find 9 as a product of primes.
First divide 9 by the smallest prime factor it has.
9/3=3
Next, divide the result (3) by the smallest prime factor it has.
3/3=1
Once you reach 1, which we just did, you have finished.
Now collect all the results you have.
3x3
There you go, 9=3x3, as a product of primes.
or 3^2, if you want to write it in index notation.
This works for any integer.