Answer
$x^{2}+x-20$
Work Step by Step
Make a table of products.
$\begin{array}{rll}
& x & -4\\
\hline x |& x^{2} & -4x\\
5 |& 5x & -20
\end{array}$
Answer: $x^{2}-4x+5x-20$, or $x^{2}+x-20$.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 8 - Polynomials and Factoring - 8-3 Multiplying Binomials - Practice and Problem-Solving Exercises - Page 501: 14
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