College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter R - Section R.8 - nth Roots; Rational Exponents - R.8 Assess Your Understanding - Page 78: 8


We need to multiply by (c).

Work Step by Step

We need to multiply by (c), $1+\sqrt{3}$ to rationalize the denominator ($1-\sqrt{3}$). because this will remove the root: $(1+\sqrt{3})(1-\sqrt{3})=1^2-(\sqrt{3})^2=1-3=-2$
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