Hope I wrote this clearly
The values are
and 
Explanation:
The expression is 
Simplifying, we get,

Since, both sides of the expression are equal, we can equate the corresponding values of A, B, C and D.
Thus, we get,
⇒
and 
Also, equating,
, we get,
and 
Thus, the values are
and 
This sequence is not a geometric.
It is because, common ratio = 6/3 = 2
9/6 = 1.5
As the ratio's are not same, it is not a G.P
Hope this helps!