Question

Find the coefficient of the term in of the binomial expansion of (1+3x)^12​

Answer 1

your answer bro,:-

(1+3x)^12 in These question we cannot expand because on expanding 3x we will get a large number, which will later create problems.

so, to avoid it, we can directly say the coefficient of x that is 3 because it is asked in a binomial expansion, which is this only.