Math, asked by rupikasharma82, 8 months ago

Arithmetic & Geometric Progressions.Answer already given in bracket,I want the solution please.

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Answers

Answered by lpnmpatel1979

1

Answer:

-2,-6,-18..or 4,-12,36..

Step-by-step explanation:

a+ar = -8

a(1+r) = -8

ar^4= 9a r^2

r^2=9

r= 3or-3

thus,

a=4 or -2

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