Find the term independent of x in the expansion of :

To Find : term independent of x, i.e. x⁰

For

a=x, and N=3n

We have a formula,

Now, to get coefficient of term independent of xthat is coefficient of x⁰ we must have,

(x)^3n-3r = x⁰

• 3n - 3r = 0

• 3r = 3n

• r = n

Therefore, coefficient of x⁰

Conclusion : coefficient of x⁰