Answer
$\sqrt 7$
Work Step by Step
Simply put, an irrational number is any real number that isn't a rational number. That is to say, it is any number that can't be expressed as $\frac{a}{b}$, where $a$ and $b$ are both integers and $b\ne0$.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 1 - Section 1.2 - Algebraic Expressions and Sets of Numbers - Exercise Set - Page 16: 35
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