SOLUTION: Find the formula for the nth term of the geometric sequence with a_2 = -18 and a_5 = 144.

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Question 1087015: Find the formula for the nth term of the geometric sequence with a_2 = -18 and a_5 = 144.
Found 3 solutions by ikleyn, Fombitz, MathTherapy:
Answer by ikleyn(52780)   (Show Source): You can put this solution on YOUR website!
.
Solved and answered at this link
https://www.algebra.com/algebra/homework/word/geometry/Geometry_Word_Problems.faq.question.1087012.html

https://www.algebra.com/algebra/homework/word/geometry/Geometry_Word_Problems.faq.question.1087012.html


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Ignore the solution by @Fombitz: it is wrong and irrelevant.



Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!

So,

1.
and

2.
Subtract 1 from 2,


Then from 1,


So,
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Find the formula for the nth term of the geometric sequence with a_2 = -18 and a_5 = 144.
I really wonder, at times, what these people gain by coming into this forum and posting WRONG &/or RIDICULOUS answers to people seeking help with math problems. 

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