Elementary Algebra

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

Chapter 5 - Exponents and Polynomials - 5.2 - Multiplying Monomials - Problem Set 5.2: 95

Answer

$-20x^{10n}$

Work Step by Step

Using the law $a^{m}\times a^{n}=a^{m+n}$ to obtain: $(4x^{3n})(-5x^{7n})$ $=(4\times -5)(x^{3n}\times x^{7n})$ $=(-20)(x^{3n+7n})$ $=-20x^{10n}$
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