Answer
$3-4i$
Work Step by Step
Use $i^3=-i$ and $i^2=-1$ then simplify.
$4i^3-2i^{2}+1\\
=4(-i)-2(-1)+1\\
=-4i+2+1\\
=-4i+3\\
=3-4i$
Hence, the solution in the standard form is $3-4i$.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Appendix A - Review - A.7 Complex Numbers; Quadratic Equations in the Complex Number System - A.7 Assess Your Understanding - Page A61: 42
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
