Question

solve this plz

fast
don't answer anything useless ​

Answer 1

Step-by-step explanation:

you have to use identity (x+y)^3=x^3+y^3+3xy(x+y)

= x^3+1/x^3*x*1/x(x+1/x)

you need to substitute the value of x+1/x here.

hope it helps!!