Elementary Algebra

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

Chapter 7 - Algebraic Fractions - Chapters 1-7 Cumulative Review Problem Set - Page 324: 23



Work Step by Step

We use the rule $a^{m}\times a^{n}=a^{m+n}$ in the simplification of the expression: $(-5x^{2}y)(7x^{3}y^{4})$ =$(-5\times7)\times(x^{2}\times x^{3})\times(y\times y^{4})$ =$(-35)\times(x^{2+3})\times(y^{4+1})$ =$(-35)\times(x^{5})\times(y^{5})$ =$-35x^{5}y^{5}$
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