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Question

If |x22x3|+|x+3|=|x2x|, then x lies in

A
[3,)
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B
[3,0][3,)
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C
[3,1][3,)
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D
[3,1][3,)
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Solution

The correct option is C [3,1][3,)
|x22x3|+|x+3|=|x2x|
Let x22x3=a, x+3=b
Here a+b=x2x
Clearly, |a|+|b|=|a+b| that is possible only when
ab0
(x22x3)(x+3)0
(x3)(x+1)(x+3)0
x[3,1][3,)

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