Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 1 - Expressions, Equations, and Inequalities - 1-2 Properties of Real Numbers - Practice and Problem-Solving Exercises: 63

Answer

Not true because $\sqrt 2$, which is an irrational number, times $\sqrt 2$ is 2, which is a rational number.

Work Step by Step

$\sqrt 2\times\sqrt 2=\sqrt 2^2=2$ because the radical and the power of two cancel each other out.
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