Question

If x = ✓2 + 1 , Find the value of (x - 1/x)²​

Answer 1

Step-by-step explanation:

x=√2+1

1/x=√2-1/(√2+1)(√2-1)=√2-1/2-1

=√2-1

x-1/x=√2+1-√2+1=2

(x-1/x)^2=2^2=4

Answer 2

Step-by-step explanation:

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