Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 10 - 10.2 - Operations with Matrices - 10.2 Exercises - Page 724: 18

Answer

$\begin{bmatrix} -5 & 6 \\ -2 & -2 \end{bmatrix}$

Work Step by Step

$\begin{bmatrix} 6 & 8 \\ -1 & 0 \end{bmatrix}+\begin{bmatrix} 0 & 5 \\ -3 & -1 \end{bmatrix}+\begin{bmatrix} -11 & -7 \\ 2 & -1 \end{bmatrix}=\begin{bmatrix} 6+0-11 & 8+5-7 \\ -1-3+2 & 0-1-1 \end{bmatrix}=\begin{bmatrix} -5 & 6 \\ -2 & -2 \end{bmatrix}$
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