2. Find the Eighth term in the geometric sequence 5,-10,20,-40
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2. Find the Eighth term in the geometric sequence 5,-10,20,-40
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Answer:
-640
Step-by-step explanation:
common ratio: -2
5 x -2 = -10
-10 x -2 = 20
20 x -2 = -40
-40 x -2 = 80
80 x -2 = -160
-160 x -2 = 320
320 x -2 = -640