Answer
$x^2-5$
Work Step by Step
Using the difference of two binomials formula:
$(x+\sqrt 5)(x-\sqrt 5)=x^2-(\sqrt 5)^2=$$x^2-5$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Prerequisites - Chapter Test - Page 65: 10
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