Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter R - Algebra Reference - R.3 Rational Expressions - R.3 Exercises - Page R-11: 25



Work Step by Step

$\dfrac{a+1}{2}-\dfrac{a-1}{2}$ Since the two rational expressions have the same denominator, evaluate the subtraction of the numerators and use the same denominator in the resulting expression: $\dfrac{a+1}{2}-\dfrac{a-1}{2}=\dfrac{a+1-(a-1)}{2}=...$ Simplify: $...=\dfrac{a+1-a+1}{2}=\dfrac{1+1}{2}=\dfrac{2}{2}=1$
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