Multiple Choice

An HVAC technician is solving the equation (x−2)2+3=30(x - 2)^2 + 3 = 30 to determine the optimal pressure setting for a ventilation unit. During the solving process, the technician simplifies the radical 27\sqrt{27} by rewriting it as 9⋅3\sqrt{9} \cdot \sqrt{3}. Which mathematical property justifies this specific simplification step?

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Updated 2026-09-17

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