Answer:

Yes each sequence is geometric

Explanation:

Finding the Common ratio

-4 + 2= - 2

-2 is the Common Ratio

In the rules of Geometric Sequence, we Multiply the Sequence

Formula in Geometric:

Where:

an = nth term

a1 = first term

r = common ratio

n = term position

In step-by-step Sequence:

-1 x -2 = -2

-2 x -2 = -4

-4 x -2 = -8

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