Algebra 2 (1st Edition)

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

Chapter 11 Data Analysis and Statistics - 11.1 Find Measures of Central Tendency and Dispersion - 11.1 Exercises - Problem Solving - Page 749: 31b

Answer

See below.

Work Step by Step

$(a-b)^2\geq0\\a^2+b^2-2ab\geq0\\a^2+b^2+2ab\geq4ab\\(a+b)^2\geq4ab$ Thus we proved what we had to.
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