BdMO National Junior 2019/8
Posted: Mon Mar 04, 2019 8:51 am
$M$ & $N$ are two distinct positive integer. If L.C.Mof $M,N$ is $M^2-N^2+MN$. Prove that $MN$ is a perfect cube.
The Official Online Forum of BdMO
https://matholympiad.org.bd/forum/