College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 6 - Summary, Review, and Test - Review Exercises - Page 656: 16

Answer

$ \left[\begin{array}{lll} -4 & 4 & -1\\ -2 & -5 & 5 \end{array}\right]$

Work Step by Step

To subtract two matrices, they must have the same order. The resulting matrix has elements obtained by subtracting the corresponding elements of the two matrices. A and D are both $2\times 3 $ matrices (can be subtracted), $D-A=\left[\begin{array}{lll} -2-2 & 3-(-1) & 1-2\\ 3-5 & -2-3 & 4-(-1) \end{array}\right]$ =$ \left[\begin{array}{lll} -4 & 4 & -1\\ -2 & -5 & 5 \end{array}\right]$
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