Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 5 - Section 5.1 - Adding and Subtracting Polynomials - Exercise Set - Page 349: 74

Answer

$\displaystyle \frac{1}{2}x^{2}-\frac{7}{10}x$

Work Step by Step

$ \begin{array}{rrrrrrr} & \frac{3}{8}x^{2} & -\frac{1}{3}x & -\frac{1}{4} & \\ -[ & (-\frac{1}{8})x^{2} & +\frac{1}{2}x & -\frac{1}{4} & ]\\ \hline & & & & \\ = & (\frac{3}{8}+\frac{1}{8})x^{2} & +(-\frac{1}{5}-\frac{1}{2})x & +(-\frac{1}{4}+\frac{1}{4}) & \\ & & & & \\ = & \frac{4}{8}x^{2} & +\frac{-2-5}{10}x & +0 & \\ & & & & \\ = & \frac{1}{2}x^{2} & -\frac{7}{10}x & & \\ & & & & \end{array}$
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