Algebra 2, 2008
Observe the matrix; the matrix has 2 rows and 2 columns.
So, the dimensions of matrix are .
The determinant of a matrix is called a second-order determinant.
Second-order determinant definition is:
Find the determinant using second-order determinant definition.
Slove for x if det
Add 6 to each side.
Divide each side by negative 5.
The value of .
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