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Jerem · Answer 1 · 2023-05-30T08:02:16+0000

We are looking for values of x that will not make the equation undefined .Obviously the function has restrictions we have to make sure that x-7 is always ≥0 because it is under a square root

$x-7\geq 0\\x\geq 7$

The domain of the function is all the real numbers greater or equal to 7 .

x≥7 ε R

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