Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 9 - Quadratic Functions and Equations - Chapter Review - Page 605: 43


$x=0.1$ or $x=-0.3$

Work Step by Step

$64x^2+12x-1=0$ Use the quadratic formula. $x=\frac{-(12)+\sqrt (12)^2-4.(64).(-1)}{2.(64)}$ $x=\frac{-12 \pm 20}{128}$ $x=\frac{-12+20}{128}$ or $x=\frac{-12- 20}{128}$ $x=0.1$ or $x=-0.3$
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