Note the following cube root calculations
The cube root of the first term x3 = x ← This is {a}The cube root of the second term 27y9 = 3y3 ← This is {b}
Since both cube roots are integer constants and powers, x3 - 27y9 is in the Difference of cubes format
The formula for factoring the Difference of cubes is as follows:
a3 - b3 = (a - b)(a2 + ab + b2)
