What’s the answer to this?

The missing term is:

Step-by-step explanation:

Considering the geometric sequence

Here,

The general term of a geometric sequence is given by the formula:

where is the initial term and the common ratio.

as

        ∵

Taking positive value of

putting

So, the sequence becomes  

Therefore, the missing term is:

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3