x2=1/x2=14,then x+1/x=
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I think it's answer is x+2.
Answered by
1
Step-by-step explanation:
x² + 1/x² = 28
(x + 1/x)² = x² + 1/x² + 2
(x + 1/x)² = 28+2 = 30
x + 1/x = √30
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