Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11 - 11.1 - Sequences and Series - 11.1 Exercises - Page 777: 20


$a_1=-5$ $a_2=-4$ $a_3=9$ $a_4=40$ $a_5=95$

Work Step by Step

$a_n=n(n^2-6)$ $a_1=1(1^2-6)=1(1-6)=1(-5)=-5$ $a_2=2(2^2-6)=2(4-6)=2(-2)=-4$ $a_3=3(3^2-6)=3(9-6)=3(3)=9$ $a_4=4(4^2-6)=4(16-6)=4(10)=40$ $a_5=5(5^2-6)=5(25-6)=5(19)=95$
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