Question

if x= 2-√3 ,find the value of (x—1/x³)

Answer 1

x = 2 + root 3

1 /x = 1 / 2 + root 3 = 2 - root 3

x  - 1 /x = 2 + roo3 - 2 + root 3 = 2 * root 3

(x - 1 /x)3 = (2 * root 3)3 = 8*3 root 3 = 24 * root 3