Answer
$(x+2-y)(x^{2}+4x + 4+xy+2y+y^{2})$
Work Step by Step
Expression : $(x+2)^{3}-y^{3}$
By the well known formula : $x^{3}-y^{3}=(x-y)(x^{2}+xy+y^{2})$
$(x+2)^{3}-y^{3} = (x+2-y)((x+2)^{2}+(x+2)y+y^{2}) = (x+2-y)(x^{2}+4x + 4+xy+2y+y^{2})$