Question

if a(1) =-6 and a(2) =30 what is geometric sequence

Answer 1

\[a_{n}=(-6)(-5)^{n-1}\]

Answer 2

\(a_1,a_2,a_3,a_4,...\) since it is geometric it must be
\(a_1, a_1r,a_1r^2,a_1r^3,...\)
you know \(a_1=-6\) and \(r=\frac{a_2}{a_1}=\frac{30}{-5}=-6\)

Answer 3

@satellite73 it is -5