Question

Find the 12th term of the geometric sequence 2, -8,32, ...

Answer 1

Answer:

-8388607

Step-by-step explanation:

a = 2

r = -8/2 = -4

12th term = (2)×(-4)¹¹

= -8388608

Answer 2

Answer:

Step-by-step explanation:

hello :

the n-ieme term is : An=A1×r^(n-1)

A1 the first term       r : the common ratio

in this exercice : A1 =2       r = 32/-8=-8/2 = - 4         n = 12

A12=2×(-4)^(12-1) = -2×4^11     because :   ((-4)^(11)= - 4^11