Short Answer

Duct Design: Simplifying Modular Volume Expressions

An HVAC design apprentice is modeling the volume of a custom modular ventilation duct. The volume of this duct segment in cubic inches is represented by the algebraic expression (3x2)3(3x^2)^3. Before entering this formula into the sheet metal fabrication software, the apprentice must simplify the expression.

To assist the apprentice, address the following three tasks:

  1. Recall and state the name of the exponent property (or describe the mathematical rule) used to distribute the outer exponent 3{}3 to each factor inside the parentheses.
  2. Recall and state the name of the exponent property (or describe the mathematical rule) used to simplify the variable part of the expression, (x2)3(x^2)^3.
  3. Write down the final, fully simplified algebraic expression.

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Updated 2026-06-02

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