Evaluate: `1. 5^3-0. 9^3-0. 6^3`

Explanation

To evaluate the expression \(1.5^3 - 0.9^3 - 0.6^3\), we can use the algebraic identity for the sum of cubes, which states:

\[ A^3 + B^3 + C^3 - 3ABC = (A + B + C)(A^2 + B^2 + C^2 - AB - BC - AC) \]

In our case, we can rewrite the expression as:

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