Answer
a). 31 x
B). 31$\sqrt 2$
Work Step by Step
a). 21 x + 10 x = 31 x
B). 21 $\sqrt 2$ +10$\sqrt 2$ = 31$\sqrt 2$
College Algebra (6th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-32178-228-3
ISBN 13:
978-0-32178-228-1
Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.2 - Page 35: 150
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