Let the coefficients of third, fourth and fifth terms in the expansion of be in the ratio . Then the term independent of in the expansion is equal to ………
Step 1: Finding the term independent of using Binomial expansion
The given expression
So, of this expression
Step 2: Dividing coefficients of
so,
Step 3: Dividing coefficients of
so,
By solving and we have
Step 4: Calculating independent term of ‘,
Substituting,
Hence, the term independent of x in the expansion is equal to 3rd term and value is