Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 8 - Radical Functions - Chapter Test - Page 672: 30



Work Step by Step

Step 1: $(7+2i)(3-5i)$ Step 2: $7(3-5i)+2i(3-5i)$ Step 3: $21-35i+6i-10i^{2}$ Step 4: As $i^{2}=-1$, we get $21-35i+6i-10(-1)$ Step 5: $21+10-35i+6i$ Step 6: $31-29i$
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