Question

Exercese : -6.5 1) For each geometric progression find the common ratio ly and then find an ol . 3.
-1,-3,-9,-27.
first tetm (a) = -1
common ratio (r) = a2/a1 = -3/-1 =3

nth term in G.P (an=a.r) n-1

= -1×3n-1​

Answer 1

Answer:

I don't know the answer sorry