. The sum of the first 20 terms of an arithmetic series is 45. The sum of the first 40 terms of the series is 290. Find the first term and the common difference of the series. Hence, find the seventh term of the series. 2. Find the 9th term and the sum of the first 9th term of the following geometric sequence. 7, −14, 28, … .3. Use Binomial Theorem to find the expansion of (2? − 3?)5

. The sum of the first 20 terms of an arithmetic series is 45. The sum of the first 40 terms of the series is 290. Find the first term and the common difference of the series. Hence, find the seventh term of the series. 2. Find the 9th term and the sum of the first 9th term of the following geometric sequence. 7, −14, 28, … .3. Use Binomial Theorem to find the expansion of (2? − 3?)5

Algebra and Trigonometry (MindTap Course List)

4th Edition

ISBN:9781305071742

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter13: Sequences And Series

Section13.CR: Chapter Review

Problem 6CC

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