College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Section 1.5 - Complex Numbers - 1.5 Exercises: 16

Answer

real part: 2 imaginary part: $-\sqrt{5}$

Work Step by Step

If the complex number is $a+bi$, then the real part is $a$ and the imaginary part is $b$. We have $2-\sqrt{-5}=2-\sqrt{5}i$, so the real part is $2$ and the imaginary part is $-\sqrt{5}$.
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