Essay

Procedural Documentation of the FOIL Method

In your role as a technical lead, you are creating a training guide for junior analysts on algebraic modeling. You need to provide a clear, step-by-step breakdown of how to expand the expression (y7)(y+4)(y - 7)(y + 4) using the FOIL (First, Outer, Inner, Last) method. Write a brief explanation that identifies each of the four specific multiplication steps. For each step, state which two terms are being multiplied and the resulting product of that specific step. Your response should list the four products exactly as they appear before they are combined into a final trinomial.

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Updated 2026-04-19

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