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Find the domain of the real function f(x...

Find the domain of the real function `f(x)=(1)/(sqrt([x]^(2)-[x]-2)`.

A

`(-oo, - 2) cup (1 ,oo)`

B

`(-oo, - 2) cup (0, oo) `

C

`(- oo, - 2) cup (2 ,oo)`

D

`(- oo, - 1) cup (3, oo)`

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The correct Answer is:
D
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