Multiple Choice

A facilities manager uses the equation 5n49=0\sqrt{5n - 4} - 9 = 0 to determine the load capacity (nn) of a backup power system. After isolating the radical to obtain the equation 5n4=9\sqrt{5n - 4} = 9, the manager squares both sides. According to the standard procedure for radical equations, what is the resulting expression on the left side of the equation?

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Updated 2026-04-20

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