I dunno
Obviously the answer is 2+x(y)
And even if you don’t simplify it to y the end result is the same
2+x(y-z) = 2+xy-xz
I don’t know why, but this was intuitively my first approach. Eve though it’s much simpler than that.

I don’t know why, but this was intuitively my first approach

Because that’s what we teach students to do, though technically it should be (xy-xz)