You can put this solution on YOUR website! Find the least common multiple (LCM) of: xsquared-ysquared, and x+y
It is x^2-y^2 because x^2-y^2 is (x-y)(x+y)
and x^2-y^2 is 1(x^2-y^2)
It is like sayiing the LCM of 6 and 2 is 6 because 6=3*2 and 6=1*6.
Hope this helps.