## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson

# Chapter 4 - Polynomials - 4.2 Negative Exponents and Scientific Notations - 4.2 Exercise Set - Page 245: 108

#### Answer

$6.106\times10^{-11}$

#### Work Step by Step

Using the laws of exponents and the concepts of scientific notation, the given expression, $(7.1\times10^{-7})(8.6\times10^{-5})$, simplifies to \begin{array}{l} (7.1)(8.6)\times10^{-7+(-5)} \\\\= 61.06\times10^{-12} \\\\= 6.106\times10^{-11} .\end{array}

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