Short Answer

Aligning Machinery Wear Models

An operations manager at a manufacturing plant is aligning two risk assessment models representing machinery wear over time. These models use the rational expressions 2x2x12\frac{2}{x^2-x-12} and 1x216\frac{1}{x^2-16}. To combine these models into a single report, both must be rewritten using the lowest common denominator (x+3)(x4)(x+4)(x+3)(x-4)(x+4). Based on the standard procedure for rewriting rational expressions, identify the specific binomial factor that the manager must multiply both the numerator and denominator of the first model, 2x2x12\frac{2}{x^2-x-12}, by to achieve this common denominator, and state the resulting fully simplified numerator.

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Updated 2026-06-01

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