Algebra and Trigonometry 10th Edition

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

Prerequisites - Review Exercises - Page 62: 15


(a) $-1$ (b) $-3$

Work Step by Step

$-x^2+x-1$ (a) $x=1$ $-1^2+1-1=-1+1-1=-1$ (b) $x=-1$ $-(-1)^2+(-1)-1=-1-1-1=-3$
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