Question

Which expression represents the sixth term in the binomial expansion of (5y + 3)10? 10C5(5y)5(3)5 10C6(5y)4(3)6 510C5(y)5(3)5 510C6(y)4(3)6

Answer 1

Answer:

I think its B. 10C6(5y)4(3)6

Step-by-step explanation:

Answer 2

Answer:

The sixth term of the binomial expansion is;

10C5 (5y)^5 (3)^5

Step-by-step explanation:

Here, we want to select which of the options represent the 6th term of the binomial expansion;

(5y + 3)^10

We should know that while the powers of 5y will be increasing, the powers of 3 will be decreasing.

We can write the terms as follows;

10C0(5y)^10(3)^0 + 10C1(5y)^9(3)^1 + 10C2(5y)^

8(3)^2 + 10C3(5y)^7(3)^3 + 10C4(5y)^6(3)^4 + 10C5(5y)^5(3)^5 + ............