What is the factored form of x12y18+1

For this case we must factor the following expression:

We rewrite as

Being both perfect cube terms, it is factored by applying the cube sum formula:

Where:

So:

Option B

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.