Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 11 - Further Topics in Algebra - 11.2 Arithmetic Sequences and Series - 11.2 Exercises: 15

Answer

$=x+2y$

Work Step by Step

$d=a_{n+1}-a_{n}=\left( 3x+7y\right) -\left( 2x+5y\right) =\left( 2x+5y\right) -\left( x+3y\right) =x+2y$
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