Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 8 - Systems of Linear Equations and Problem Solving - 8.8 Business and Economics Applications - 8.8 Exercise Set - Page 563: 33



Work Step by Step

Solving the equation by factoring, we find: $$ 25x^2-1=0 \\\left(5x+1\right)\left(5x-1\right) =0 \\ x=-\frac{1}{5},\:x=\frac{1}{5}$$
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