Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 5 - Exponents and Polynomials - 5.6 - Integral Exponents and Scientific Notation - Problem Set 5.6 - Page 223: 38

Answer

$30x^{3}$

Work Step by Step

Using the laws of exponents, the given expression, $ (5x^{-4})(6x^7) ,$ is equivalent to \begin{array}{l}\require{cancel} (5)(6)x^{-4+7} \\\\= 30x^{3} .\end{array} For more complicated problems, it is helpful to remember that you can flip the location of numbers with negative exponents. In other words, you can move numbers with a negative exponent that are in the numerator to the denominator, and you can move numbers with a negative exponent in the denominator to the numerator.
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