Chapter 6, Matrices and Determinants - Section 6.2 - The Algebra of Matrices - 6.2 Exercises - Page 511: 10

\[ M= \left[ {\begin{array}{cc} -2 & 0 & 2\\ 0 & -2 & 2 \\ \end{array} } \right] \]

\[ M= \left[ {\begin{array}{cc} -2 & 1-1 & 1+1\\ 1-1 & 1-3 & 2 \\ \end{array} } \right] \] \[ M= \left[ {\begin{array}{cc} -2 & 0 & 2\\ 0 & -2 & 2 \\ \end{array} } \right] \]