Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 10 - Radical Expressions and Equations - 10-3 Operations with Radial Expressions - Practice and Problem-Solving Exercises - Page 616: 31



Work Step by Step

Multiply using the conjugate. Remember that $(a-b)(a+b)=a^2-b^2$ $\frac{3}{\sqrt{7}-\sqrt{3}}\cdot \frac{\sqrt{7}+\sqrt{3}}{\sqrt{7}+\sqrt{3}}=\frac{3\sqrt{7}+3\sqrt{3}}{7-3}=\frac{3\sqrt{7}+3\sqrt{3}}{4}$
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