Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 5 Polynomials and Polynomial Functions - 5.4 Factor and Solve Polynomial Equations - 5.4 Exercises - Skill Practice - Page 357: 36



Work Step by Step

$4w^4+40w^2-44=4(w^4+10w^2-11)=4(w^2+11)(w^2-1)=0$ Thus $w^2+11=0$ (but this is impossible since $w^2$ is non-negative or $w^2-1=0\\w^2=1\\w=\pm1$
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