Question

If x = 1 - √2, find the value of (x-1/x)³​

Answer 1

Answer:

Step-by-step explanation:

x=1-√2

1/x=1/1-√2=1/1+√2×1+√2/1+√2

=1/x=-(1+√2)

Thus

x-1/x={(1-√2)-(-1+√2)}

=2

(x-1/x)³=(2)³=8