What is the first four terms of the geometric sequence where a1=−8 and r=−2 ? (explanations appreciated!)

asked Nov 12, 2022 211k views

1 vote

What is the first four terms of the geometric sequence where a1=−8 and r=−2 ?

(explanations appreciated!)

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3 votes

Answer:

-8, 16, -32, 64

Explanation:

a1 = -8

r = -2

a2 = -8(-2)=16

a3 = -8(-2)²=-8(4)=-32

a4=-8(-2)³=-8(-8)=64

RET answered Nov 16, 2022

by RET

4.3k points

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