(5xg)-f=25-f
F= rly anything g=5
Answer:

Step-by-step explanation:
Add the 2 equations together, then solve for x.

Now that we know the value of x, we can easily find y by substitution.

These are the answers
- Kan Academy Advance
Answer:
The required recursive formula is:

Step-by-step explanation:
We are given a geometric sequence as:
6,-18,54,-162,.....
Clearly after looking at different terms of the sequence we could observe that the sequence is an geometric progression (G.P.) with common ratio= -3 denoted by r.
Let
represents the nth term of the sequence.
This means that:

As the common ratio is -3.
so,

Hence, the required recursive formula for the geometric sequence is:

Find common factor, in this case the common factor is 10x
So the answer would be 10x(x^6 - y^10)