Answer:
7
Explanation:
The first three terms of a GP are a, ar, ar²
thus we can Equate them to the corresponding terms in the question.
a = a
a+ 14 = ar
9a = ar²
we can simplify the third term to get r
9a = ar² . divide both sides by a
9= r²
thus we square root both sides to get
r = ± 3
thus our r is 3
we insert the value of r in the second term to get a
a + 14 = 3a
14 = 2a
a = 7