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May 23, 2015

Homework Help: Maaaaaaaath

Posted by t.t on Tuesday, March 27, 2012 at 5:21pm.

the first three terms of an arithmetic sequence are x-2;2x+6 and 4x-8 respectively..determine.....(1)x (2) the 20th term (3) the sum of the first 20 terms of the sequence

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