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 - Page 200: 17

Answer

$-56x^2y^3$

Work Step by Step

Using $x^a\cdot x^b=x^{a+b}$, the given expression, $ (4xy)(-2x)(7y^2) ,$ simplifies to \begin{array}{l}\require{cancel} (4)(-2)(7)x^{1+1}y^{1+2} \\\\= -56x^2y^3 .\end{array}
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