Answer
$5x^2-15x+35$
Work Step by Step
Using $a(b+c)=ab+ac$ or the Distributive Property, the given expression, $
-5(-x^2+3x-7)
,$ simplifies to
\begin{array}{l}
-5(-x^2)-5(3x)-5(-7)
\\\\=
5x^2-15x+35
\end{array}
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 5 - Polynomials and Factoring - 5.4 Factoring Perfect-Square Trinomials and Differences of Squares - 5.4 Exercise Set - Page 333: 98
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