- #1
a.katerina
- 3
- 0
Hi,
i have just registered to the forum, because this time i study number theory and in some problems i can't figure out how to solve them.
This time i have to prove: If two integers x,y doesn't divided with 3 then the (x^2 - y^2) always is divided with 3.
Does anyone has a clue how to start?
Thank you!
i have just registered to the forum, because this time i study number theory and in some problems i can't figure out how to solve them.
This time i have to prove: If two integers x,y doesn't divided with 3 then the (x^2 - y^2) always is divided with 3.
Does anyone has a clue how to start?
Thank you!