Calculate the following sums 35 a) (k³ + 3k² - 20k) = k=1 30 b) Σ(2j+ 3)² = j=1 20 Σ(-++-- =

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section: Chapter Questions
Problem 46RE: Find the fourth term of (3a22b)11 without fully expanding the binomial.
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3. Calculate the following sums
35
α) Σ(k3 + 3k2 – 20k) =
k=1
30
b) Σ(2j + 3)2 =
• Σ( - ² + ²+ 3-3) -
=
(=1
Transcribed Image Text:3. Calculate the following sums 35 α) Σ(k3 + 3k2 – 20k) = k=1 30 b) Σ(2j + 3)2 = • Σ( - ² + ²+ 3-3) - = (=1
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