Factorise : `8x^3+y^3+27 z^3-18 x y z`.

Explanation

To factorize the expression \(8x^3 + y^3 + 27z^3 - 18xyz\), we can use the identity for the sum of cubes and the product of three variables. The identity states:

\[ a^3 + b^3 + c^3 - 3abc = (a + b + c)(a^2 + b^2 + c^2 - ab - ac - bc) \]

### Step 1: Identify \(a\), \(b\), and \(c\)

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