Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 8 - Polynomials and Factoring - 8-2 Multiplying and Factoring - Practice and Problem-Solving Exercises - Page 495: 9



Work Step by Step

We start with the given expression: $7x(x+4)$ We apply the distributive property to multiply the monomial by the binomial: $7x(x)+(4)(7x)$ We multiply the coefficients and add the exponents on each term to arrive at our answer: $$7x^{1+1}+28x$$$$7x^{2}+28x$$
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