Algebra and Trigonometry 10th Edition

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

Chapter 1 - 1.4 - Quadratic Equations and Applications - 1.4 Exercises - Page 110: 42


{-1, 7/3}

Work Step by Step

$3x^2-4x-7=0$ $x^2-\frac{4x}{3}=7/3=21/9$ $x^2-\frac{4x}{3}+4/9=25/9$ $(x-2/3)^2=(5/3)^2$ x-2/3=5/3 or -5/3 x=7/3 or -3/3=-1
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