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 7.2 - Rational Exponents - Exercise Set - Page 522: 115

Answer

$x+2x^{\frac{1}{2}}-15$

Work Step by Step

Simplify. $(x^{\frac{1}{2}}-3)(x^{\frac{1}{2}}+5)$ Thus, $=x^{\frac{1}{2}}x^{\frac{1}{2}}+5x^{\frac{1}{2}}-3x^{\frac{1}{2}}-15$ or, $=x^{\frac{2}{2}}+2x^{\frac{1}{2}}-15$ or, $=x+2x^{\frac{1}{2}}-15$
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