Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 9 - Sequences and Series - 9-1 Mathematical Patterns - Lesson Check: 2

Answer

The first five terms are -1, 0, 3, 8, 15.

Work Step by Step

$a_{n}$=$n^{2}$-2n $a_{1}$=$1^{2}$-2(1) =-1 $a_{2}$=$2^{2}$-2(2) =0 $a_{3}$=$3^{2}$-2(3) =3 $a_{4}$=$4^{2}$-2(4) =8 $a_{5}$=$5^{2}$-2(5) =15 *The 'n' can be replaced with the number of the term you are trying to find. For example, if you are trying to find the 7th term you can plug the number 7 in for 'n'.
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