Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 4 Quadratic Functions and Factoring - 4.7 Complete the Square - 4.7 Exercises - Quiz for Lessons 4.5-4.7 - Page 291: 9



Work Step by Step

$ 3i(7-9i)\qquad$ ...apply the distributive property. $=21i-27i^{2}\qquad$ ...simplify. ($i^{2}=-1$) $=21i+27$ $=27+21i$
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