Question

find the GP for which the sum of the first two terms is -4 and the fifth term is 4 times of third term

Answer 1

Answer:

Gp is -4/3 , -8/3 , -16/3 , -32/3 , -64/3

Another GP = 4 , -8 , 16 , -32 , 64

Step-by-step explanation:

Let say terms are

a ar ar^2 ar^3 ar^4

a +ar = -4

ar^4 = 4 ar^3

r^2= 4

r = +/- 2

r=2

a +a2 = -4

a= -4/3

Gp is -4/3 , -8/3 , -16/3 , -32/3 , -64/3

r= -2

a +a(-2) = -4

-a = -4

a = 4

GP = 4 , -8 , 16 , -32 , 64