i am lost in the steps i am working with binomial theorem to expand the expression.

Question

Finding the three first terms in the expanison of :

((x^2) -((1)/(2x) ^8)

Answer 1

i wrote down the incorrect problem sorry the actual problem is

((x) + ((1)/(x)))^40

Answer 2

Let me see what you have. The formula for expansion is straighforward, we will critique your work.