25holteasd 25holteasd

08-11-2021
Mathematics

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The first three terms of a geometric sequence are
-2, 8 ,-32
Find the next two terms of this sequence.

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watsonultra2 watsonultra2

08-11-2021

Answer:

a4 = 128

a5 = -512

Step-by-step explanation:

a1= -2

q= (-1)^(n+1) × 4

a4 = a1q³ = (-2) (-4)³ = -2 × -64 = +128

a5 = a1q⁴ = (-2) (-4)⁴ = -2 × 256 = -512

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