$\left\{ \begin{array} { l } x ^ { 2 } + y ^ { 2 } = 13 \\x - y = 1\end{array} \right.$

Q122: Find the indicated sum or difference,

Q123: <span class="ql-formula" data-value="\left\{ \begin{array} { l }

Q124: Find the indicated matrix.<br>-Let <span

Q125: first two games of the season.

Q126: Solve using Cramer's rule, if possible.

Q128: Find the value of the determinant.<br>-

Q129: Use an inverse matrix to find

Q130: Either the dimensions of two matrices

Q131: first two games of the season.

Q132: <span class="ql-formula" data-value="\left\{ \begin{array} { l }