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यदि a+1/a=3 है, तो (a^(4) +1/a^(4)) बराब...

यदि `a+1/a=3` है, तो `(a^(4) +1/a^(4))` बराबर है-

A

27

B

47

C

81

D

77

लिखित उत्तर

Verified by Experts

The correct Answer is:
B
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