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Question

If x+(1/x) = 2, then the value of x4+(1/x4) =


A

2

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B

0

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C

4

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D

6

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E

None of these

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Solution

The correct option is A

2


Squaring twice, we get x4+1x4 + 2 = 4

x4+1x4 = 2


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