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

JEE Advanced Mathematics question

The largest set of real values of for which

f(x) = -

is a real function is

Answer: (B)

First term: . Second term: $ - 4 > 0

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Question ID VK-109124