Solution:
The differences of perfect cube is expressed in the form:
[tex](a)^3-(b)^3[/tex]
From the given options, we have the difference of perfect cubes to be
[tex]\begin{gathered} 216a^6-27y^3\Rightarrow\left(6a^2\right)^3-\left(3y\right)^3 \\ \\ 8a^{15}-27\Rightarrow(2a^5)^3-(3)^3 \end{gathered}[/tex]
Hence, the correct options are
