SOLUTION: what are the first 3 terms of a geometric progression of -540, -20?

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Question 1040286: what are the first 3 terms of a geometric progression of -540, -20?
Answer by ikleyn(52787) About Me  (Show Source):
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what are the first 3 terms of a geometric progression of -540, -20?
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If the first 2 terms of a geometric progression are -540, -20, then the third term is -20%2F27.