Find the 8th term of geometric sequence 2,-10,50 ...

- 156250

Step-by-step explanation:

Find the ratio of the geometric sequence.

-10/2 = - 5

50/-10 = - 5

The common ratio is - 5.

Apply the formula.

an = ar^ (n-1)

Where a is the first term and r is the ratio.

a8 = 2 (-5) ^ (8-1)

a8 = 2 (-5) ^7

a8 = 2 (-71825)

a8 = - 156250