Question

If x=2√3+2√2,find: (x+1/x)²​

Answer 1

Answer:

Here x=2−3–√(1)

Hence 12−3√=12−3√⋅2+3√2+3√=2.(2)

From (1) and (2) we get x+1x=4

and x−1x=−23

From (3) and (4) we get x2−1x2=(x+1x).(x−1x)=−83–√.

Answer 2

Answer:

93+30√6/4

Step-by-step explanation:

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