Essay

Analyzing Storage Capacity with Difference of Cubes

A facilities planning analyst is modeling the difference in storage volumes of two custom-built product containers. The capacity difference is represented by the algebraic expression (n+3)3−125n3(n + 3)^3 - 125n^3. To simplify this model, the analyst must apply the difference of cubes factoring technique.

Without performing the final algebraic simplifications, write a response that:

  1. States the general algebraic formula for the difference of cubes, a3−b3a^3 - b^3.
  2. Identifies the specific algebraic expressions that represent aa and bb when mapping (n+3)3−125n3(n + 3)^3 - 125n^3 to this formula, and explains why bb is 5n{}5n rather than 125n{}125n.
  3. Shows the initial setup of the factored expression by substituting these expressions for aa and bb into the difference of cubes formula.

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Updated 2026-09-19

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Intermediate Algebra @ OpenStax

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