Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Appendix A - A.1 - Algebraic Expressions - Exercises - Page 543: 24a

Answer

45

Work Step by Step

Using the FOIL method: (2 + 3)$\times$(4 + 5) = 2$\times$4 + 2$\times$5 + 3$\times$4 + 3$\times$5 = 8 + 10 + 12 + 15 = 45
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