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The largest set of real values of x for ...

The largest set of real values of `x` for which `f(x)=sqrt((x + 2)(5-x))-1/sqrt(x^2-4)`- is a real function is

A

`[1, 2) cup (2, 5]`

B

(2, 5]

C

[3, 4]

D

`[(1)/(sqrt(2)), 1]`

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The correct Answer is:
B
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