Essay

Recalling Key Algebraic Properties in Inventory Modeling

An inventory analyst at a retail distribution center uses the quadratic equation (3x8)(x1)=3x(3x - 8)(x - 1) = 3x to find the optimal monthly reorder frequency, where xx represents the number of orders per month. To document the workflow for the standard operating procedure (SOP) manual, the analyst needs to explain the exact mathematical properties and algebraic methods used at three key steps in the solution.

Write a short essay that identifies and names the standard mathematical procedures, rules, or properties used to perform the following steps from memory:

  1. Expanding the left side of (3x8)(x1)=3x(3x - 8)(x - 1) = 3x to get 3x211x+8=3x{}3x^2 - 11x + 8 = 3x.
  2. Transitioning from 3x211x+8=3x{}3x^2 - 11x + 8 = 3x to the standard form 3x214x+8=0{}3x^2 - 14x + 8 = 0.
  3. Transitioning from the factored form (3x2)(x4)=0(3x - 2)(x - 4) = 0 to the separate equations 3x2=0{}3x - 2 = 0 and x4=0x - 4 = 0.

State each property or method clearly and describe briefly what each rule states or how it is applied in that specific step.

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Updated 2026-06-05

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