2nd term in expansion of (3y + x)3

4th option

Step-by-step explanation:

There is a common difference between consecutive terms in the sequence , that is

4 - (- 2) = 10 - 4 = 16 - 10 = 6

This indicates the sequence is arithmetic with explicit formula

= a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = - 2 and d = 6 , then

= - 2 + 6(n - 1) = - 2 + 6n - 6 = 6n - 8