Answer
See below
Work Step by Step
The first three iterations are:
$$x_1=f(x_0)=x^2_0-8=2^2-8=-4\\x_2=f(x_1)=x_1^2-8=(-4)^2-8=8\\x_3=f(x_2)=x_2^2-8=8^2-8=56$$
The sum is $-4+8+56=60$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 12 Sequences and Series - Mixed Review of Problem Solving - Lessons 12.4-12.5 - Page 838: 3
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