Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 7 - Section 7.5 - Multiplying with More Than One Term and Rationalizing Denominators - Exercise Set - Page 551: 117

Answer

$ \frac{\sqrt{5}+1}{2}$ 1.62

Work Step by Step

$\frac{2}{\sqrt{5}–1}$ $= \frac{2}{\sqrt{5}–1} \times \frac{\sqrt{5}+1}{\sqrt{5}+1}$ $= \frac{2(\sqrt{5}+1)}{\sqrt{5}^2–1}$ $= \frac{2(\sqrt{5}+1)}{4}$ $= \frac{\sqrt{5}+1}{2}$ $= \frac{1.236+1}{2} = 1.618$ Evaluation to hundredth place 1.62 to 1
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