Multiple Choice

A laboratory technician is using a rational equation to model the concentration of a chemical solution over time: 15x2+x−6−3x−2=2x+3\frac{15}{x^2+x-6} - \frac{3}{x-2} = \frac{2}{x+3}. To ensure the model is mathematically valid and avoid a system error caused by division by zero, the technician must identify the 'restricted values' for the variable xx. Which of the following sets represents these restricted values?

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Updated 2026-09-19

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