Question

The sum of first three terms of the GP is 13 and sum of their squares is 91. Determine the G.P.

Answer 1

Answer:

a/r+a+ar=13

a^2/r^2+a^2+a^2r^2=91

r=1/3 r=3

a/r=3/3=1

a=3

ar=3(3)=9

(1,3,9)

(9,3,1)