Answer:
x = 21
Explanation:
We assume your equation is intended to be ...
√(x -5) +7 = 11
Then the solution looks like ...
√(x -5) = 4 . . . . . subtract 7
x -5 = 4² = 16 . . . square both sides
x = 21 . . . . . . . . . add 5
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