Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 5 - Section 5.5 - Multiplication of Polynomials - Exercise - Page 225: 23



Work Step by Step

By multiplying each term of the polynomial by the factor $\frac{4}{7} y z^{3}$, and then adding the products, we have $$ \frac{4}{7} y z^{3}\left(28 y-\frac{2}{5} z\right)=\frac{4}{7} y z^{3}\left(28 y\right)+\frac{4}{7} y z^{3}\left(-\frac{2}{5} z\right)\\ =16y^2z^3-\frac{8}{35}yz^4. $$
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