Answer
$-54x^3+30x$
Work Step by Step
Using $a(b+c)=ab+ac$ (or the Distributive Property), the given expression, $
-6x(9x^2-5)
,$ is equivalent to
\begin{array}{l}\require{cancel}
-6x(9x^2)-6x(-5)
\\\\=
-54x^3+30x
.\end{array}
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
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: 52
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