Can someone please help me

(X+-2)(y+-4)
(X)(y)+(x)(-4)+(-2)(y)+(-2)(-4)
Xy-4x-2y+8

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.