If x =2root6 + 5 find the value of x +1/x
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x=2√6 + 5, 1/x comes 5 - 2√6 after rationalising, so
x + 1/x = 2√6 + 5 + 5 -2√6
⇒10
x + 1/x = 2√6 + 5 + 5 -2√6
⇒10
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