Question

What is the third term in the binomial expansion of (3x + y3)4?

54x^2*y^3
18x^2*y^3
18x^2*y^6
54x^2*y^6

Answer 1

54x^2y^6

Explanation:

Answer 2

I have some notes here that will help you answer the problem on your own:

Working rules for finding particular terms:

Step 1:

Find the general term Tr+1 in the expansion of (a + b)n.

Step 2:

Assume that Tr+1 is the desired particular term.

Step 3:

Find the value of r.

Step 4:

Put the value of r in the term Tr+1. This gives the required particular term(s).

I hope my answer has come to your help. God bless and have a nice day ahead!