College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 4, Exponential and Logarithmic Functions - Section 4.5 - Exponential and Logarithmic Functions - 4.5 Exercises: 62

Answer

$x=3$ or $x=-2$

Work Step by Step

$\log_{2}(x^{2}-x-2)=2$ $2^2=x^{2}-x-2$ $x^{2}-x-2=4$ $x^{2}-x-6=0$ $(x-3)(x+2)=0$ $(x-3)=0$ or $(x+2)=0$ $x=3$ or $x=-2$
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