The domain of the function f : R → R defined by \(\rm \sqrt {x^2 \ - \ x - 110}\) is.

1
(- ∞, - 10] ∪ [11, ∞)
2
(- ∞, 11] ∪ [- 10, ∞)
3
(- ∞, 10] ∪ [- 11, ∞)
4
(- ∞,  10] ∪ [11, ∞)

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