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posted by alejandro Monday, September 10, 2012 at 3:52pm.
Write the first three terms of a geometric sequence that has a first term of a = 7 and a common ratio, r, that satisfies r2 = 9.
r^2 = 9 r = 3 or -3 terms: 7 21 63 . . . or: 7 -21 63 . . .
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