??????? Consider the following matrices: [ mathbf{A}=left[begin{array}{cc} -1 & 1 0 & 1 end{array} ight], mathbf{B}=left[begin{array}{cc} -1 & -1 0 & -1 end{array}

??????? Consider the following matrices: \[ \mathbf{A}=\left[\begin{array}{cc} -1 & 1 \\ 0 & 1 \end{array}\right], \mathbf{B}=\left[\begin{array}{cc} -1 & -1 \\ 0 & -1 \end{array}\right], \mathbf{C}=\left[\be 2 answers