Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - 1.5 - Complex Numbers - 1.5 Exercises - Page 119: 65


$(21+5\sqrt 2)+(7\sqrt 5-3\sqrt {10})i$

Work Step by Step

$(3+i\sqrt5)(7-i\sqrt{10})=21-3i\sqrt {10}+7i\sqrt5+5\sqrt2$ $=(21+5\sqrt2)+(7\sqrt5-3\sqrt{10})i$
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