Precalculus (6th Edition)

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

Chapter 1 - Equations and Inequalities - 1.3 Complex Numbers - 1.3 Exercises - Page 111: 6



Work Step by Step

Simplify the left side of the equation: $\sqrt{-25} \\= \sqrt{25(-1)} \\=5\sqrt{-1}$ Since $\sqrt{-1} = i$, then the expression above simplifies to: $=5i$ Thus, the given statement is true.
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