## College Algebra 7th Edition

Published by Brooks Cole

# Chapter P, Prerequisites - Section P.3 - Integer Exponents and Scientific Notation - P.3 Exercises - Page 23: 22

#### Answer

a. $y^{-3}$ b. $z^{-2}$ c. $x^{-4}$

#### Work Step by Step

a. $y^{2}y^{-5} = y^{2-5} = y^{-3}$ b. $z^{5}z^{-3}z^{-4} = z^{5-3-4}=z^{-2}$ c. $\frac{x^{6}}{x^{10}} = x^{6-10} =x^{-4}$

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