Algebra and Trigonometry 10th Edition

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

Chapter 1 - 1.6 - Other Types of Equations - 1.6 Exercises - Page 128: 17


$+1, -1 , \sqrt3, -\sqrt3$

Work Step by Step

$x^4-4x^2+3=0$ $(x^2-3)(x^2-1)=0$ $x^2-1=(x-1)(x+1)=0$ gives x=1 or -1 $x^2-3=(x-\sqrt3)(x+\sqrt3)=0$ gives $x= \sqrt3$ or $-\sqrt3$
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