Multiple Choice

An operations analyst is simplifying a productivity formula, represented by the complex rational expression 1x+1yxy−yx\frac{\frac{1}{x}+\frac{1}{y}}{\frac{x}{y}-\frac{y}{x}}, to include in a departmental report. When applying the LCD method, which of the following best describes the reason the Least Common Denominator (LCD) is identified as xyxy?

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Updated 2026-09-18

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