G(4)= 25, r= -5

Question

What are the first five terms and the recursive (now) rule

Answer 1

a_n+1 = (-5)a_n

 

G₄ = a₁(-5)^4-1

25 = a₁(-5)³

25 = -125a₁

-0.2 = a₁

 

You can determine the next four terms.