Question

if x=√5+2,then find the value of x²+1/x².
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Answer 1

Step-by-step explanation:

Given;

x=√5+2

Hence,

• x*2+1/x*2
• (√5+2)*2+1/(√5+2)*2
• (5+4)+1/(5+4)
• 9+1/9
• 81+1/9
• 82/9 Ans.

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