Question

Pls solve it step by step using identity :

If x = 2 - √3 , then find the value of x ^3 -( 1 ÷ x^3)

Answer 1

X=2root3
2root3^3-(1÷2root3)
24root3-1÷2root3
144-1÷2root3
143/2root3
286root3/12
146root3/6
$done$