Multiple Choice

A project manager is simplifying a productivity ratio formula used to compare team outputs: 2x+64x−6−4x2−36\frac{\frac{2}{x+6}}{\frac{4}{x-6}-\frac{4}{x^2-36}}. During the final stage of the simplification process, the manager obtains the intermediate expression 2(x−6)4(x+5)\frac{2(x-6)}{4(x+5)}. According to the steps for simplifying complex fractions, which common factor must be identified and removed from both the numerator and the denominator to reach the fully simplified form?

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Updated 2026-09-18

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