ANSWER
Factoring Pattern: C. difference of Cubes
Factored Form: (x - y)(x^2 +xy + y^2)
Step-by-step explanation
Step 1:
If you observe the expression very well, both terms are Perfect Cubes;
Hence, Difference of Cubes formula would be applied to factorize the expression.
Step 2:
Difference of Cubes formula

where a = x and b = y.
Step 3:
Rewriting the Expression

Hence, the Factored Form is (x - y)(x^2 +xy + y^2)