Question

If x is equal to 1-✓2 then find ( x-1/x)^2

Answer 1

So the given equation is, x+1/x=2.

Thus, 2x=x+1.

Hence, x=1.

I hope we are clear till here.

The question asked is x^4 - 1/x^4.

Putting the value of x that we obtained from the given equation(i.e. x=1) in the second equation we get,

1^4 - 1/1^4 = 1 -1/1 = 1-1 = 0.

Answer 2

i hope it will help you
in this i used conjugate of 1_root2