Question

the sum of the first two term of a GP is 36 and the product of first and third term of a GP is 9 times the second term , find the sum of 8 term​

Answer 1

Answer:

Step-by-step explanation:

a+ar=36

a(ar2)=9ar

ar=9

a=27

r=1/3

sum of first eight terms

27((1-(1/3)7)/1-1/3

27(1-1/2187)/2/3

3×27(2186/2187)/2

1093/243

Answer 2

Answer:

Step-by-step explanation: