Question

if x-1/x= 3 evaluate x^3-1/x^3​

Answer 1

Step-by-step explanation:

x - (1/x) =3......(1)

{x-(1/x)}³=3³

x³-(1/x)³-3(x-1/x)=27

x³-(1/x)³-3(3)=27. [from 1]

x³-1/x³=27+9

x³-1/x³=36