# Chapter 7 - Exponents and Exponential Functions - Concept Byte - Powers of Powers and Powers of Products - Page 432: 13

a) The constant and the variable both get the exponent (via distribution). b) $r^{20}$$s^{20}$

#### Work Step by Step

a) $(3n)^2$ = $3^2$*$n^2$ = $9n^2$ Both the constant and the variable get the exponent. b) $(rs)^{20}$ = $r^{20}*s^{20}$ = $r^{20}s^{20}$

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