Question

How do you write the prime factorization of 81?

Answer 1

`3xx3xx3xx3`

Explanation:

Prime factorization is where we take a number, such as 81, and break it down into its prime factors.

For instance, `9xx9=81`.

9 is a factor of 81. But 9 isn't prime. `3xx3=9`. 3 is prime.

And so we can use that to rewrite what we started with:

`9xx9=color(red)(3xx3xx3xx3)=81`

The red is the prime factorization.