Question

find x-1/x if x=1-√2

Answer 1

x - 1/x

1-√2 - 1/(1-√2) ................................................... (∵x = 1-√2)

= 1 - √2 - 1×(1+√2)/(1-√2)(1+√2)

= 1 - √2 - (1+√2)/(1²-√2²)

= 1 - √2 - (1+√2)/(1-2)

= 1 - √2 - (1+√2)/-1

= 1 - √2 + 1+√2

=1+1= 2

HOPE IT WAS HELPFUL ............................ :)

Answer 2

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