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Q.

If 2x42x , then the range of x is

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a

(2, ∞)

b

(2, 4)

c

{2}

d

(-∞, 2)

answer is D.

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Detailed Solution

2x-4±0 and 2-x≥0 and 2x-4≤4+x2-4x
i.e x2 -6x +8 ≥0 x≥2 and x ≤ 2  x = 2

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