- Thread starter
- #1

- Jan 29, 2012

- 661

I have given a link to the topic there so the OP can see my response.Find the value of x such that the following sequence forms a geometric progression...?

x-1, 3x+4, 6x+8............so i am suppose to solve this by this rule: a,b,c then b^2=ac but im just going around in circles because i have no idea how to get an answer, my textbook says the answer is -6, but i want to know the working out....any answers appreciated!

thanks in advance