An expression is defined as a set of numbers, variables, and mathematical operations. The polynomial expression that represents the sum of cubes is (s+6)(s²-6s+36).
<h3>What is an Expression?</h3>
In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.
The sum of the cubes of a polynomial expression can be written as,

Therefore, we need to find the polynomial expression which looks similar to the above expression,

Thus, the polynomial expression that represents the sum of cubes is
.
Learn more about Expression:
brainly.com/question/13947055