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Question

The number of real roots of (x+1x)24=0 is

A
0
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B
2
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C
4
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D
none of these
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Solution

The correct option is B 2
(x+1x)24=0(x+1x)222=0(x+1x2)(x+1x+2)=0x+1x2=0x22x+1=0(x1)2=0x=1orx+1x+2=0x2+2x+1=0(x+1)2=0x=12realroots

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