Answer:
Explanation:
x > 1
9514 1404 393
C. x ≥ 1
The content of the radical must be non-negative in both cases. The square of x is already non-negative for any x.
15(x -1) ≥ 0
x -1 ≥ 0 . . . . divide by 15; next, add 1
x ≥ 1 . . . . . matches choice C
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