## Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole

# Chapter 1 - Section 1.2 - Exponents and Radicals - 1.2 Exercises: 35

a) 6$x^3$$y^5 b) \frac{25w^4}{z} #### Work Step by Step a) (3x^3$$y^2$)(2$y^3$) = (2)(3)$x^3$$y^{2+3} = 6x^3$$y^{5}$ b) $(5$$w^2$$z^{-2}$)$^{2}$($z^3$) = $5^2$$w^{(2)(2)}$$z^{(-2)(2)}$$z^3 = 25w^4$$z^{-4+3}$ = 25$w^4$$z^{-1}$ = $\frac{25w^4}{z}$

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