Question

If x=√2 + 1 then find (x-1/x)²
please answer this is very important to me!!!​

Answer 1

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Refer to the attachment

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

x=√2 + 1

(x-1/x)²= (√2 + 1 - 1 / √2 + 1)²

=((√2) / √2 + 1))²

= 2 / 2+1+2√2

=2/ 3 + 2√2